Merge branch 'release/r#119' into develmaster

CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj

@@ -98,6 +98,7 @@
     </Compile>
     <Compile Include="Feed\Departments\DepartmentFavoriteFeed.cs" />
     <Compile Include="Const.cs" />
+    <Compile Include="Resources\Icons.Designer.cs" />
     <Compile Include="Utility\Lui\Button\EmailButton.cs" />
     <Compile Include="Feed\Link\CommonLinkFeed.cs" />
     <Compile Include="Feed\Link\ClubLinkFeed.cs" />
@@ -204,11 +205,6 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Constants.resx</DependentUpon>
     </Compile>
-    <Compile Include="Resources\Icons.Designer.cs">
-	      <AutoGen>True</AutoGen>
-      <DesignTime>True</DesignTime>
-      <DependentUpon>Icons.resx</DependentUpon>
-    </Compile>
     <Compile Include="ThemelizedIcons.cs" />
     <Compile Include="Utility\Api.cs" />
     <Compile Include="Utility\ApiEventHandler.cs" />
@@ -338,6 +334,7 @@
     <Content Include="Assets\Icons\DarkTheme\favorite_159.png" />
     <Content Include="Assets\Icons\DarkTheme\info_159.png" />
     <Content Include="Assets\Icons\DarkTheme\phone_159.png" />
+    <Content Include="Assets\Icons\DarkTheme\update_159.png" />
     <Content Include="Assets\Icons\LightTheme\add_159.png" />
     <Content Include="Assets\Icons\LightTheme\btulogo_159.png" />
     <Content Include="Assets\Icons\LightTheme\campus_159.png" />
@@ -366,6 +363,7 @@
     <Content Include="Assets\Icons\DarkTheme\student_council_159.png" />
     <Content Include="Assets\Icons\LightTheme\student_council_159.png" />
     <Content Include="Assets\Icons\DarkTheme\webmail_159.png" />
+    <Content Include="Assets\Icons\LightTheme\update_159.png" />
     <Content Include="Assets\Icons\LightTheme\webmail_159.png" />
     <Content Include="Assets\testmap.png" />
     <Content Include="Assets\Tiles\FlipCycleTileLarge.png">
@@ -383,6 +381,9 @@
     <Content Include="Assets\Tiles\IconicTileSmall.png">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Content Include="Assets\Tiles\kachel_large.png" />
+    <Content Include="Assets\Tiles\kachel_medium.png" />
+    <Content Include="Assets\Tiles\kachel_small.png" />
     <Content Include="README_FIRST.txt" />
     <Content Include="Toolkit.Content\ApplicationBar.Cancel.png" />
     <Content Include="Toolkit.Content\ApplicationBar.Check.png" />
@@ -401,8 +402,6 @@
       <SubType>Designer</SubType>
     </EmbeddedResource>
     <EmbeddedResource Include="Resources\Icons.resx">
-            <Generator>PublicResXFileCodeGenerator</Generator>
-      <LastGenOutput>Icons.Designer.cs</LastGenOutput>
       <SubType>Designer</SubType>
     </EmbeddedResource>
   </ItemGroup>

CampusAppWP8/CampusAppWP8/Feed/Departments/DepartmentFavoriteFeed.cs

@@ -28,7 +28,8 @@ namespace CampusAppWP8.Feed.Departments
         public DepartmentFavoriteFeed(bool autoLoad = true)
             : base(ModelType.File, Constants.FileDepartment_Favorite_Name, string.Empty)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
 
             if (autoLoad == true)
             {
@@ -68,7 +69,7 @@ namespace CampusAppWP8.Feed.Departments
         /// <param name="model">model object</param>
         /// <param name="info">file info object</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(DepartmentModel model, FileInfo info)
+        private bool CheckIsFileUpToDateOnLoad(DepartmentModel model, FileInfo info)
         {
             bool retValue = false;
 
@@ -76,11 +77,22 @@ namespace CampusAppWP8.Feed.Departments
             {
                 retValue = true;
             }
-            else
-            {
-                retValue = (model.HasChanged() == false) ? true : false;
-            }
+            
+            return retValue;
+        }
 
+        /// <summary>
+        /// Method implement CheckIsFileUpToDate()-Method <see cref="Pages"/>.
+        /// </summary>
+        /// <param name="model">model object</param>
+        /// <param name="info">file info object</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(DepartmentModel model, FileInfo info)
+        {
+            bool retValue = false;
+
+            retValue = (model.HasChanged() == false) ? true : false;
+            
             return retValue;
         }
 

CampusAppWP8/CampusAppWP8/Feed/Departments/DepartmentFeed.cs

@@ -27,8 +27,9 @@ namespace CampusAppWP8.Feed.Departments
         public DepartmentFeed(bool autoLoad = true)
             : base(ModelType.FileAndFeed, Constants.FileDepartment_Name, Constants.UrlDepartment_Addr)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
 
             if (autoLoad == true)
             {
@@ -70,7 +71,7 @@ namespace CampusAppWP8.Feed.Departments
         /// <param name="model">model object</param>
         /// <param name="info">file info object</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(DepartmentModel model, FileInfo info)
+        private bool CheckIsFileUpToDateOnLoad(DepartmentModel model, FileInfo info)
         {
             bool retValue = true;
 
@@ -82,19 +83,30 @@ namespace CampusAppWP8.Feed.Departments
                     retValue = Utilities.DayDifference(Utilities.DifferenceType.Less, info.LastWriteTime, 7.0);
                 }
             }
-            else 
-            {
-                // at saving
-                if ((info.Exists == false)
-                || (info.Length == 0))
-                {
-                    retValue = false;
-                }
-            }
             
             return retValue;
         }
 
+        /// <summary>
+        /// Method implement CheckIsFileUpToDate()-Method <see cref="Pages"/>.
+        /// </summary>
+        /// <param name="model">model object</param>
+        /// <param name="info">file info object</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(DepartmentModel model, FileInfo info)
+        {
+            bool retValue = true;
+
+            // at saving
+            if ((info.Exists == false)
+            || (info.Length == 0))
+            {
+                retValue = false;
+            }
+        
+            return retValue;
+        }
+
         // Protedted
         #endregion
 

CampusAppWP8/CampusAppWP8/Feed/Events/EventFeed.cs

@@ -25,8 +25,9 @@ namespace CampusAppWP8.Feed.Events
         public EventFeed(bool autoLoad = true)
             : base(ModelType.FileAndFeed, Constants.FileEvents_Name, Constants.UrlEvents_Addr)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
 
             if (autoLoad == true)
             {
@@ -61,7 +62,7 @@ namespace CampusAppWP8.Feed.Events
         /// <param name="model">model object</param>
         /// <param name="info">file info object</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(RSSViewModel model, FileInfo info)
+        private bool CheckIsFileUpToDateOnLoad(RSSViewModel model, FileInfo info)
         {
             bool retValue = true;
 
@@ -73,16 +74,26 @@ namespace CampusAppWP8.Feed.Events
                     retValue = Utilities.DayDifference(Utilities.DifferenceType.Less, info.LastWriteTime, 1.0);
                 }
             }
-            else 
-            {
-                // at saving
-                if ((info.Exists == false)
-                || (info.Length == 0))
-                {
-                    retValue = false;
-                }
-            }
+            
+            return retValue;
+        }
 
+        /// <summary>
+        /// Method implement CheckIsFileUpToDate()-Method <see cref="Pages"/>
+        /// </summary>
+        /// <param name="model">model object</param>
+        /// <param name="info">file info object</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(RSSViewModel model, FileInfo info)
+        {
+            bool retValue = true;
+
+            if ((info.Exists == false)
+            || (info.Length == 0))
+            {
+                retValue = false;
+            }
+        
             return retValue;
         }
     }

CampusAppWP8/CampusAppWP8/Feed/News/NewsFeed.cs

@@ -25,8 +25,9 @@ namespace CampusAppWP8.Feed.News
         public NewsFeed(bool autoLoad = true)
             : base(ModelType.FileAndFeed, Constants.FileNews_Name, Constants.UrlNews_Addr)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
 
             if (autoLoad == true)
             {
@@ -61,28 +62,37 @@ namespace CampusAppWP8.Feed.News
         /// <param name="model">model object</param>
         /// <param name="info">info object of the file</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(RSSViewModel model, FileInfo info)
+        private bool CheckIsFileUpToDateOnLoad(RSSViewModel model, FileInfo info)
         {
             bool retValue = true;
 
             if (model == null) 
             {
-                // at loading
                 if (info.Exists == true)
                 {
                     retValue = Utilities.DayDifference(Utilities.DifferenceType.Less, info.LastWriteTime, 1.0);
                 }
             }
-            else 
-            {
-                // at saving
-                if ((info.Exists == false)
-                || (info.Length == 0))
-                {
-                    retValue = false;
-                }
-            }
+            
+            return retValue;
+        }
+        
+        /// <summary>
+        /// Method implement CheckIsFileUpToDate()-Method <see cref="Pages"/>
+        /// </summary>
+        /// <param name="model">model object</param>
+        /// <param name="info">info object of the file</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(RSSViewModel model, FileInfo info)
+        {
+            bool retValue = true;
 
+            if ((info.Exists == false)
+            || (info.Length == 0))
+            {
+                retValue = false;
+            }
+        
             return retValue;
         }
     }

CampusAppWP8/CampusAppWP8/Feed/Openinghours/OpeninghoursFeed.cs

@@ -12,7 +12,8 @@ namespace CampusAppWP8.Feed.Openinghours
     using CampusAppWP8.Model;
     using CampusAppWP8.Model.Openinghours;
     using CampusAppWP8.Resources;
-
+    using CampusAppWP8.Utility;
+    
     /// <summary>
     /// This Class is for MesaFeeds
     /// </summary>
@@ -26,8 +27,9 @@ namespace CampusAppWP8.Feed.Openinghours
         public OpeninghoursFeed()
             : base(ModelType.FileAndFeed, Constants.FileOpeningHours_OpeningHours,  Constants.UrlOpeningHours_OpeningHours)
         {
-            this.isFileUpToDate += new IsFileUpToDate(this.CheckIsFileUpToDate);
-            this.isModelUpToDate += new IsModelUpToDate(this.CheckIsModelUpToDate);
+            this.isFileUpToDateOnLoad += new IsFileUpToDate(this.CheckIsFileUpToDateOnLoad);
+            this.isFileUpToDateOnSave += new IsFileUpToDate(this.CheckIsFileUpToDateOnSave);
+            this.isModelUpToDateOnLoad += new IsModelUpToDate(this.CheckIsModelUpToDate);
         }
 
         #endregion
@@ -43,35 +45,58 @@ namespace CampusAppWP8.Feed.Openinghours
         /// <returns>true, if model is up-to-date, otherwise false</returns>
         private bool CheckIsModelUpToDate(OpeninghoursModel model)
         {
+            bool retValue = true;
+
             if (model == null)
             {
-                return false;
+                retValue = false;
+            }
+            else
+            {
+                retValue = Utilities.DayDifference(Utilities.DifferenceType.Less, model.CreateTime, 7.0);
             }
 
-            DateTime lastModified = model.CreateTime;
-            return this.CheckIsUpToDate(lastModified);
+            return retValue;
         }
 
         /// <summary>
         /// Method check if the FeedFile is up-to-date
         /// </summary>
         /// <param name="model">reference of the FeedModel</param>
-        /// <param name="fileInfo">info about the file</param>
+        /// <param name="info">info about the file</param>
         /// <returns>true, if file is up-to-date, otherwise false</returns>
-        private bool CheckIsFileUpToDate(OpeninghoursModel model, FileInfo fileInfo)
+        private bool CheckIsFileUpToDateOnLoad(OpeninghoursModel model, FileInfo info)
         {
-            DateTime lastModified = fileInfo.LastWriteTime;
-            return this.CheckIsUpToDate(lastModified);
+            bool retValue = true;
+
+            if (model == null)
+            {
+                if (info.Exists == true)
+                {
+                    retValue = Utilities.DayDifference(Utilities.DifferenceType.Less, info.LastWriteTime, 7.0);
+                }
+            }
+
+            return retValue;
         }
 
         /// <summary>
-        /// Check if the model or file is up-to-date.
+        /// Method check if the FeedFile is up-to-date
         /// </summary>
-        /// <param name="lastModified">Date of the last modification</param>
-        /// <returns>true, if is up-to-date, otherwise false</returns>
-        private bool CheckIsUpToDate(DateTime lastModified)
+        /// <param name="model">reference of the FeedModel</param>
+        /// <param name="info">info about the file</param>
+        /// <returns>true, if file is up-to-date, otherwise false</returns>
+        private bool CheckIsFileUpToDateOnSave(OpeninghoursModel model, FileInfo info)
         {
-            return true;
+            bool retValue = true;
+
+            if ((info.Exists == false)
+            || (info.Length == 0))
+            {
+                retValue = false;
+            }
+
+            return retValue;
         }
 
         #endregion

CampusAppWP8/CampusAppWP8/Model/Departments/DepartmentModel.cs

@@ -72,7 +72,7 @@ namespace CampusAppWP8.Model.Departments
         /// Check if the content of the faculty lists hast changed since the
         /// last call of this function.
         /// </summary>
-        /// <returns>true, if changes happend since last request, otherwise false</returns>
+        /// <returns>true, if changes happen since last request, otherwise false</returns>
         public bool HasChanged()
         {
             bool retValue = false;

CampusAppWP8/CampusAppWP8/Model/Departments/FacultyModel.cs

@@ -221,7 +221,7 @@ namespace CampusAppWP8.Model.Departments
         /// <summary>
         /// Return true if there were changes in the chair list, otherwise false.
         /// </summary>
-        /// <param name="reset">when true, the hasChanged flag will be reseted</param>
+        /// <param name="reset">when true, the hasChanged flag will be reset</param>
         /// <returns>true, when changed, otherwise false</returns>
         public bool HasChanged(bool reset = true)
         {

CampusAppWP8/CampusAppWP8/Model/Lecture/LecturePageModel.cs

@@ -40,9 +40,39 @@ namespace CampusAppWP8.Model.Lecture
         private List<ListPickerItemModel> semesterList;
 
         /// <summary>
-        /// List for the number of semester
+        /// List for the number of semester (from)
         /// </summary>
-        private List<ListPickerItemModel> numberList;
+        private List<ListPickerItemModel> fromNumberList;
+
+        /// <summary>
+        /// List for the number of semester (to)
+        /// </summary>
+        private List<ListPickerItemModel> toNumberList;
+
+        /// <summary>
+        /// Variable for the courseIndex
+        /// </summary>
+        private int selectCourseIndex;
+
+        /// <summary>
+        /// Variable for the degreeIndex
+        /// </summary>
+        private int selectDegreeIndex;
+
+        /// <summary>
+        /// Variable for the semesterIndex
+        /// </summary>
+        private int selectSemesterIndex;
+
+        /// <summary>
+        /// Variable for the fromIndex
+        /// </summary>
+        private int selectFromIndex;
+
+        /// <summary>
+        /// Variable for the toIndex
+        /// </summary>
+        private int selectToIndex;
 
         #endregion
 
@@ -62,31 +92,101 @@ namespace CampusAppWP8.Model.Lecture
         /// Gets or sets the selected course index
         /// </summary>
         [DataMember]
-        public int SelectCourseIndex { get; set; }
+        public int SelectCourseIndex
+        {
+            get
+            {
+                return this.selectCourseIndex;
+            }
+
+            set
+            {
+                if (value != this.selectCourseIndex && this.courseList != null && value < this.courseList.Count)
+                {
+                    this.selectCourseIndex = value;
+                }
+            }
+        }
 
         /// <summary>
         /// Gets or sets the selected degree index
         /// </summary>
         [DataMember]
-        public int SelectDegreeIndex { get; set; }
+        public int SelectDegreeIndex
+        {
+            get
+            {
+                return this.selectDegreeIndex;
+            }
+
+            set
+            {
+                if (value != this.selectDegreeIndex && this.degreeList != null && value < this.degreeList.Count)
+                {
+                    this.selectDegreeIndex = value;
+                }
+            }
+        }
 
         /// <summary>
         /// Gets or sets the selected semester-index
         /// </summary>
         [DataMember]
-        public int SelectSemesterIndex { get; set; }
+        public int SelectSemesterIndex
+        {
+            get
+            {
+                return this.selectSemesterIndex;
+            }
+
+            set
+            {
+                if (value != this.selectSemesterIndex && this.semesterList != null && value < this.semesterList.Count)
+                {
+                    this.selectSemesterIndex = value;
+                }
+            }
+        }
 
         /// <summary>
         /// Gets or sets the selected from-index
         /// </summary>
         [DataMember]
-        public int SelectFromIndex { get; set; }
+        public int SelectFromIndex
+        {
+            get
+            {
+                return this.selectFromIndex;
+            }
+
+            set
+            {
+                if (value != this.selectFromIndex && this.fromNumberList != null && value < this.fromNumberList.Count)
+                {
+                    this.selectFromIndex = value;
+                }
+            }
+        }
 
         /// <summary>
         /// Gets or sets the selected to-index
         /// </summary>
         [DataMember]
-        public int SelectToIndex { get; set; }
+        public int SelectToIndex
+        {
+            get
+            {
+                return this.selectToIndex;
+            }
+
+            set
+            {
+                if (value != this.selectToIndex && this.toNumberList != null && value < this.toNumberList.Count)
+                {
+                    this.selectToIndex = value;
+                }
+            }
+        }
 
         /// <summary>
         /// Gets List for the courses of the BTU
@@ -124,11 +224,22 @@ namespace CampusAppWP8.Model.Lecture
         /// <summary>
         /// Gets List for the number of semester
         /// </summary>
-        public List<ListPickerItemModel> NumberList
+        public List<ListPickerItemModel> FromNumberList
         {
             get
             {
-                return this.numberList;
+                return this.fromNumberList;
+            }
+        }
+
+        /// <summary>
+        /// Gets the NumberList
+        /// </summary>
+        public List<ListPickerItemModel> ToNumberList
+        {
+            get
+            {
+                return this.toNumberList;
             }
         }
         #endregion
@@ -144,7 +255,8 @@ namespace CampusAppWP8.Model.Lecture
         {
             this.LoadCourseList();
             this.LoadDegreeList();
-            this.LoadNumberList();
+            this.LoadFromNumberList();
+            this.LoadToNumberList();
             this.LoadSemesterList();
         }
 
@@ -155,20 +267,55 @@ namespace CampusAppWP8.Model.Lecture
         /// <summary>
         /// Load the NumberList
         /// </summary>
-        private void LoadNumberList()
+        public void LoadFromNumberList()
         {
-            this.numberList = new List<ListPickerItemModel>();
-            this.numberList.Add(new ListPickerItemModel() { Text = "1", Value = "1" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "2", Value = "2" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "3", Value = "3" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "4", Value = "4" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "5", Value = "5" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "5", Value = "6" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "7", Value = "7" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "8", Value = "8" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "9", Value = "9" });
-            this.numberList.Add(new ListPickerItemModel() { Text = "10", Value = "10" });
+            string selectValue = null;
+            if (this.fromNumberList != null)
+            {
+                selectValue = this.fromNumberList[this.SelectFromIndex].Value;
+            }
 
+            this.fromNumberList = this.CreateNumberList(1, 10);
+            this.SelectFromIndex = this.GetIndexOrDefault(this.fromNumberList, selectValue);
+        }
+
+        /// <summary>
+        /// Load the NumberList
+        /// </summary>
+        public void LoadToNumberList()
+        {
+            string selectValue = null;
+            if (this.toNumberList != null)
+            {
+                selectValue = this.toNumberList[this.SelectToIndex].Value;
+            }
+
+            this.toNumberList = this.CreateNumberList(this.SelectFromIndex + 1, 10);
+            this.SelectToIndex = this.GetIndexOrDefault(this.toNumberList, selectValue);
+        }
+
+        /// <summary>
+        /// Method create a NumberList
+        /// </summary>
+        /// <param name="startvalue">startValue of the list</param>
+        /// <param name="endvalue">endValue of the list</param>
+        /// <returns>return list</returns>
+        private List<ListPickerItemModel> CreateNumberList(int startvalue, int endvalue)
+        {
+            List<ListPickerItemModel> list = new List<ListPickerItemModel>();
+            string degree = this.DegreeList[this.SelectDegreeIndex].Value;
+
+            for (int i = startvalue; i <= endvalue; i++)
+            {
+                if ((i > 4 && "88".Equals(degree)) || (i > 6 && "82".Equals(degree)))
+                {
+                    break;
+                }
+
+                list.Add(new ListPickerItemModel() { Text = i.ToString(), Value = i.ToString() });
+            }
+
+            return list;
         }
 
         /// <summary>
@@ -244,6 +391,29 @@ namespace CampusAppWP8.Model.Lecture
             this.courseList = this.courseList.OrderBy(o => o.Text).ToList();
         }
 
+        /// <summary>
+        /// Method return a the Index of an item which has a certain value
+        /// </summary>
+        /// <param name="list">list for items</param>
+        /// <param name="value">a certain value</param>
+        /// <returns>return index of value or default(0)</returns>
+        private int GetIndexOrDefault(List<ListPickerItemModel> list, string value)
+        {
+            int index = 0;
+            int i = 0;
+            foreach (ListPickerItemModel item in list)
+            {
+                if (item.Value.Equals(value))
+                {
+                    index = i;
+                    break;
+                }
+
+                i++;
+            }
+
+            return index;
+        }
         #endregion
 
         #endregion

CampusAppWP8/CampusAppWP8/Model/MainModel.cs

@@ -143,14 +143,25 @@ namespace CampusAppWP8
         public event OnSaved onSaved = null;
 
         /// <summary>
-        /// Callback pointer, for checking if file is up to date.
+        /// Callback pointer, for checking if file is up to date at loading.
         /// </summary>
-        public event IsFileUpToDate isFileUpToDate = null;
+        public event IsFileUpToDate isFileUpToDateOnLoad = null;
 
         /// <summary>
-        /// Callback pointer, for checking if model is up to date.
+        /// Callback pointer, for checking if file is up to date at saving.
         /// </summary>
-        public event IsModelUpToDate isModelUpToDate = null;
+        public event IsFileUpToDate isFileUpToDateOnSave = null;
+
+        /// <summary>
+        /// Callback pointer, for checking if model is up to date at loading.
+        /// </summary>
+        public event IsModelUpToDate isModelUpToDateOnLoad = null;
+
+        /// <summary>
+        /// Callback pointer, for checking if model is up to date at saving.
+        /// (currently unused)
+        /// </summary>
+        public event IsModelUpToDate isModelUpToDateOnSave = null;
 
         /// <summary>
         /// Specifies the I/O type of the model.
@@ -216,7 +227,6 @@ namespace CampusAppWP8
 
                 this.api.HttpGet(this.httpApiUri, this.OnLoadDataComplete);
             }
-
         }
 
         /// <summary>
@@ -232,8 +242,8 @@ namespace CampusAppWP8
                 this.onLoading();
             }
 
-            if (((this.isModelUpToDate == null)
-            || (this.isModelUpToDate(this.model) == false))
+            if (((this.isModelUpToDateOnLoad == null)
+            || (this.isModelUpToDateOnLoad(this.model) == false))
             && ((this.file != null) || this.api != null))
             {
                 if (this.file != null)
@@ -244,8 +254,8 @@ namespace CampusAppWP8
                         loadFromFile = false;
                     }
 
-                    if (((this.isFileUpToDate != null) && (this.isFileUpToDate(this.model, this.file.GetFileInfo()) == false))
-                    || (this.isFileUpToDate == null))
+                    if (((this.isFileUpToDateOnLoad != null) && (this.isFileUpToDateOnLoad(this.model, this.file.GetFileInfo()) == false))
+                    || (this.isFileUpToDateOnLoad == null))
                     {
                         loadFromFile = false;
                     }
@@ -290,7 +300,7 @@ namespace CampusAppWP8
         public void SaveData()
         {
             if ((this.file != null)
-            && ((this.isFileUpToDate == null) || (this.isFileUpToDate(this.model, this.file.GetFileInfo()) == false)))
+            && ((this.isFileUpToDateOnSave == null) || (this.isFileUpToDateOnSave(this.model, this.file.GetFileInfo()) == false)))
             {
                 if (this.onSaving != null)
                 {

CampusAppWP8/CampusAppWP8/Model/RSS/RSSChannelModel.cs

@@ -8,6 +8,7 @@
 namespace CampusAppWP8.Model.RSS
 {
     using System.Collections.ObjectModel;
+    using System.Collections.Specialized;
     using System.Xml.Serialization;
 
     /// <summary>
@@ -26,6 +27,7 @@ namespace CampusAppWP8.Model.RSS
         public RSSChannelModel()
         {
             this.item = new ObservableCollection<RSSModel>();
+            this.item.CollectionChanged += new NotifyCollectionChangedEventHandler(this.OnListChanged);
         }
 
         /// <summary>
@@ -44,13 +46,25 @@ namespace CampusAppWP8.Model.RSS
                 if (value != this.item)
                 {
                     this.item = value;
-                    int i = 0;
-                    foreach (RSSModel rssItem in this.item)
-                    {
-                        rssItem.Index = i++;
-                    }
                 }
             }
         }
+
+        /// <summary>
+        /// Is called when the item list has changed.
+        /// Here used for the add event.
+        /// Set the index of the last list element.
+        /// </summary>
+        /// <param name="sender">item list</param>
+        /// <param name="e">event args</param>
+        private void OnListChanged(object sender, NotifyCollectionChangedEventArgs e)
+        {
+            if (e.Action == NotifyCollectionChangedAction.Add)
+            {
+                ObservableCollection<RSSModel> list = sender as ObservableCollection<RSSModel>;
+
+                list[list.Count - 1].Index = list.Count - 1;
+            }
+        }
     }
 }

CampusAppWP8/CampusAppWP8/Pages/Events/EventIndexPage.xaml

@@ -43,4 +43,9 @@
             </ListBox.ItemTemplate>
         </ListBox>
     </Grid>
+
+    <phone:PhoneApplicationPage.ApplicationBar>
+        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="False" Mode="Minimized" Opacity="1.0" >
+        </shell:ApplicationBar>
+    </phone:PhoneApplicationPage.ApplicationBar>
 </phone:PhoneApplicationPage>

CampusAppWP8/CampusAppWP8/Pages/Events/EventIndexPage.xaml.cs

@@ -7,11 +7,14 @@
 //-----------------------------------------------------------------------------
 namespace CampusAppWP8.Pages.Events
 {
+    using System;
     using System.Linq;
     using System.Windows.Navigation;
     using CampusAppWP8.Feed.Events;
+    using CampusAppWP8.Resources;
     using CampusAppWP8.Utility;
     using Microsoft.Phone.Controls;
+    using Microsoft.Phone.Shell;
 
     /// <summary>
     /// Overview page of all events.
@@ -30,6 +33,12 @@ namespace CampusAppWP8.Pages.Events
         {
             this.InitializeComponent();
 
+            ApplicationBarIconButton updateBtn = new ApplicationBarIconButton();
+            updateBtn.IconUri = new Uri(Icons.Update, UriKind.Relative);
+            updateBtn.Text = AppResources.UpdateBtn;
+            updateBtn.Click += new EventHandler(this.EventForceUpdate_Click);
+            ApplicationBar.Buttons.Add(updateBtn);
+
             if (EventIndexPage.eventFeed == null)
             {
                 EventIndexPage.eventFeed = new EventFeed(false);
@@ -66,5 +75,16 @@ namespace CampusAppWP8.Pages.Events
         {
             this.EventList.ItemsSource = EventIndexPage.eventFeed.Model.Channel[0].Item;
         }
+
+        /// <summary>
+        /// On clicking the update button in the ApplicationBar.
+        /// Force a data update from the web.
+        /// </summary>
+        /// <param name="sender">button object</param>
+        /// <param name="e">event args</param>
+        private void EventForceUpdate_Click(object sender, EventArgs e)
+        {
+            EventIndexPage.eventFeed.ForceWebUpdate();
+        }
     }
 }

CampusAppWP8/CampusAppWP8/Pages/Events/EventPage.xaml

@@ -20,7 +20,7 @@
     <!-- LayoutRoot -->
     <Grid x:Name="LayoutRoot" Background="Transparent">
         <!-- Pivotpage -->
-        <phone:Pivot x:Name="EventPivot" Title="{Binding Path=LocalizedResources.ApplicationTitle, Source={StaticResource LocalizedStrings}}">
+        <phone:Pivot x:Name="EventPivot" Title="{Binding Path=LocalizedResources.ApplicationTitle, Source={StaticResource LocalizedStrings}}" SelectionChanged="OnPivotSelectionChange">
             <!-- Pivotitem template -->
             <phone:Pivot.HeaderTemplate>
                 <DataTemplate>
@@ -29,11 +29,10 @@
             </phone:Pivot.HeaderTemplate>
             <phone:Pivot.ItemTemplate>
                 <DataTemplate>
-                    <Grid>
+                    <Grid x:Name="EventParentGrid">
                         <Grid.RowDefinitions>
                             <!--<RowDefinition Height="100"/>-->
                             <RowDefinition Height="*"/>
-                            <RowDefinition Height="90"/>
                         </Grid.RowDefinitions>
 
                         <Grid x:Name="EventTextGrid" Grid.Row="0">
@@ -47,14 +46,16 @@
                                 <TextBlock x:Name="EventText" Text="{Binding Path=Text, Mode=OneWay}" Height="Auto" TextWrapping="Wrap" VerticalAlignment="Center" HorizontalAlignment="Left" FontSize="24" />
                             </ScrollViewer>
                         </Grid>
-                        
-                        <phone:WebBrowser x:Name="WebBrowser" Grid.Row="0" IsScriptEnabled="True" Visibility="Collapsed"/>
 
-                        <Button Name="EventHome" Content="{Binding Path=LocalizedResources.NewsHomeBtn, Source={StaticResource LocalizedStrings}}" Grid.Row="1" VerticalAlignment="Bottom" HorizontalAlignment="Left" Click="EventHome_Click"/>
-                        <Button Name="EventLink" Tag="{Binding Path=Link, Mode=OneWay}" Content="{Binding Path=LocalizedResources.NewsLinkBtn, Source={StaticResource LocalizedStrings}}" Grid.Row="1" VerticalAlignment="Bottom" HorizontalAlignment="Right" Click="EventLink_Click"/>
+                        <phone:WebBrowser x:Name="EventWebBrowser" Source="{Binding Path=Link, Mode=OneWay}" Grid.Row="0" IsScriptEnabled="True" Visibility="Collapsed"/>
                     </Grid>
                 </DataTemplate>
             </phone:Pivot.ItemTemplate>
         </phone:Pivot>
     </Grid>
+
+    <phone:PhoneApplicationPage.ApplicationBar>
+        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="False" Mode="Default" Opacity="1.0" >
+        </shell:ApplicationBar>
+    </phone:PhoneApplicationPage.ApplicationBar>
 </phone:PhoneApplicationPage>

CampusAppWP8/CampusAppWP8/Pages/Events/EventPage.xaml.cs

@@ -8,11 +8,15 @@
 namespace CampusAppWP8.Pages.Events
 {
     using System;
+    using System.Collections.Generic;
     using System.Linq;
     using System.Windows;
     using System.Windows.Controls;
     using System.Windows.Navigation;
+    using CampusAppWP8.Resources;
+    using CampusAppWP8.Utility;
     using Microsoft.Phone.Controls;
+    using Microsoft.Phone.Shell;
 
     /// <summary>
     /// EventPage, where every event fees has his own PivotItem.
@@ -20,16 +24,27 @@ namespace CampusAppWP8.Pages.Events
     public partial class EventPage : PhoneApplicationPage
     {
         /// <summary>
-        /// for checking if the feed source is already set or not.
+        /// To checking if the feed source is already set or not.
         /// </summary>
         private bool isSourceSet = false;
 
+        /// <summary>
+        /// To store the last selected pivot index.
+        /// </summary>
+        private int lastSelectedIndex = -1;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="EventPage" /> class.
         /// </summary>
         public EventPage()
         {
             this.InitializeComponent();
+
+            ApplicationBarIconButton linkBtn = new ApplicationBarIconButton();
+            linkBtn.IconUri = new Uri(Icons.Link, UriKind.Relative);
+            linkBtn.Text = AppResources.NewsLinkBtn;
+            linkBtn.Click += new EventHandler(this.EventLink_Click);
+            ApplicationBar.Buttons.Add(linkBtn);
         }
 
         /// <summary>
@@ -52,7 +67,7 @@ namespace CampusAppWP8.Pages.Events
             string pivotIndex = string.Empty;
 
             // Navigate to the selected pivotitem
-            if (NavigationContext.QueryString.TryGetValue("pivotindex", out pivotIndex))
+            if (NavigationContext.QueryString.TryGetValue(Constants.ParamPivotIndex, out pivotIndex))
             {
                 int pivotIndexInt = int.Parse(pivotIndex);
 
@@ -63,21 +78,35 @@ namespace CampusAppWP8.Pages.Events
                 }
                 else
                 {
-                    MessageBox.Show("ERROR: pivotIndex out of range!!!");
+                    string o = string.Empty;
+
+                    foreach (KeyValuePair<string, string> kvp in NavigationContext.QueryString)
+                    {
+                        o += string.Format("Key = {0}, Value = {1}", kvp.Key, kvp.Value) + "\n";
+                    }
+
+                    MessageBox.Show("ERROR: pivotIndex out of range!!! (" + o + ")");
                 }
             }
         }
 
         /// <summary>
-        /// On clicking the home button (lower left).
-        /// Navigate back to the event index page.
+        /// Called when the index of the selected PivotItem is changed.
+        /// Set the text Grid to visible and the WebBrowser to collapsed.
         /// </summary>
-        /// <param name="sender">clicked button</param>
+        /// <param name="sender">parent pivot object</param>
         /// <param name="e">event args</param>
-        private void EventHome_Click(object sender, RoutedEventArgs e)
+        private void OnPivotSelectionChange(object sender, SelectionChangedEventArgs e)
         {
-            // Navigate back to the event index page
-            NavigationService.GoBack();
+            int selIndex = (sender as Pivot).SelectedIndex;
+
+            if (this.lastSelectedIndex > -1)
+            {
+                Utilities.SetElementVisibility(this.EventPivot, "EventParentGrid", "EventWebBrowser", Visibility.Collapsed, this.lastSelectedIndex);
+                Utilities.SetElementVisibility(this.EventPivot, "EventParentGrid", "EventTextGrid", Visibility.Visible, this.lastSelectedIndex);
+            }
+            
+            this.lastSelectedIndex = selIndex;
         }
 
         /// <summary>
@@ -87,41 +116,17 @@ namespace CampusAppWP8.Pages.Events
         /// </summary>
         /// <param name="sender">clicked button</param>
         /// <param name="e">event args</param>
-        private void EventLink_Click(object sender, RoutedEventArgs e)
+        private void EventLink_Click(object sender, EventArgs e)
         {
-            FrameworkElement fe = sender as FrameworkElement;
-            
-            // Open the webbrowser
-            Grid grfe = fe.Parent as Grid;
-            FrameworkElement eventTextGrid = null;
-            FrameworkElement eventWeb = null;
-            
-            foreach (FrameworkElement tempElem in grfe.Children)
+            if (Visibility.Visible == Utilities.GetElementVisibility(this.EventPivot, "EventParentGrid", "EventTextGrid", this.EventPivot.SelectedIndex))
             {
-                if (tempElem.Name == "EventTextGrid")
-                {
-                    eventTextGrid = tempElem;
-                }
-                else if (tempElem.Name == "WebBrowser")
-                {
-                    eventWeb = tempElem;
-                }
+                Utilities.SetElementVisibility(this.EventPivot, "EventParentGrid", "EventTextGrid", Visibility.Collapsed, this.EventPivot.SelectedIndex);
+                Utilities.SetElementVisibility(this.EventPivot, "EventParentGrid", "EventWebBrowser", Visibility.Visible, this.EventPivot.SelectedIndex);
             }
-
-            if ((eventTextGrid != null)
-            && (eventWeb != null))
+            else
             {
-                if (eventTextGrid.Visibility == Visibility.Visible)
-                {
-                    eventTextGrid.Visibility = Visibility.Collapsed;
-                    eventWeb.Visibility = Visibility.Visible;
-                    (eventWeb as WebBrowser).Navigate(new Uri(fe.Tag.ToString(), UriKind.Absolute));
-                }
-                else
-                {
-                    eventWeb.Visibility = Visibility.Collapsed;
-                    eventTextGrid.Visibility = Visibility.Visible;
-                }
+                Utilities.SetElementVisibility(this.EventPivot, "EventParentGrid", "EventWebBrowser", Visibility.Collapsed, this.EventPivot.SelectedIndex);
+                Utilities.SetElementVisibility(this.EventPivot, "EventParentGrid", "EventTextGrid", Visibility.Visible, this.EventPivot.SelectedIndex);
             }
         }
     }

CampusAppWP8/CampusAppWP8/Pages/Lecture/LecturePage.xaml

@@ -77,7 +77,7 @@
                     <StackPanel >
                         <!-- Listpicket of degree-->
                         <TextBlock Text="{Binding Path=LocalizedResources.LectureApp_Degree, Source={StaticResource LocalizedStrings}}"/>
-                        <toolkit:ListPicker Name="Degree" ExpansionMode="FullScreenOnly">
+                        <toolkit:ListPicker Name="Degree" ExpansionMode="FullScreenOnly" SelectionChanged="DegreeSelectionChanged">
                             <toolkit:ListPicker.ItemTemplate>
                                 <DataTemplate>
                                     <StackPanel>
@@ -100,7 +100,7 @@
                         <!-- Listpicket of semesters(from to) -->
                         <TextBlock Text="{Binding Path=LocalizedResources.LectureApp_Term, Source={StaticResource LocalizedStrings}}"/>
                         <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
-                            <toolkit:ListPicker Width="60" Name="From"  ExpansionMode="FullScreenOnly">
+                            <toolkit:ListPicker Width="60" Name="From"  ExpansionMode="FullScreenOnly" SelectionChanged="FromSelectionChanged">
                                 <toolkit:ListPicker.ItemTemplate>
                                     <DataTemplate>
                                         <StackPanel>

CampusAppWP8/CampusAppWP8/Pages/Lecture/LecturePage.xaml.cs

@@ -39,6 +39,11 @@ namespace CampusAppWP8.Pages.Lecture
         /// </remarks>
         private LecturePageModel pageModel;
 
+        /// <summary>
+        /// flag for initialed page
+        /// </summary>
+        private bool init;
+
         #endregion
 
         #region Constructor
@@ -48,8 +53,10 @@ namespace CampusAppWP8.Pages.Lecture
         public LecturePage()
         {
             this.InitializeComponent();
+            this.init = false;
             this.LoadPageModel();
             this.SetupListPickers();
+            this.init = true;
         }
 
         #endregion
@@ -98,8 +105,8 @@ namespace CampusAppWP8.Pages.Lecture
         {
             this.Course.ItemsSource = this.pageModel.CourseList;
             this.Degree.ItemsSource = this.pageModel.DegreeList;
-            this.From.ItemsSource = this.pageModel.NumberList;
-            this.To.ItemsSource = this.pageModel.NumberList;
+            this.From.ItemsSource = this.pageModel.FromNumberList;
+            this.To.ItemsSource = this.pageModel.ToNumberList;
             this.Semester.ItemsSource = this.pageModel.SemesterList;
 
             // load values from last request
@@ -198,6 +205,41 @@ namespace CampusAppWP8.Pages.Lecture
             NavigationService.Navigate(url);
         }
 
+        /// <summary>
+        /// EventHandler for changed degree selection
+        /// </summary>
+        /// <param name="sender">sender object</param>
+        /// <param name="e">some args</param>
+        private void DegreeSelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
+        {
+            if (!this.init)
+            {
+                return;
+            }
+
+            this.pageModel.SelectDegreeIndex = this.Degree.SelectedIndex;
+            this.pageModel.LoadFromNumberList();
+            this.From.ItemsSource = this.pageModel.FromNumberList;
+        }
+
+        /// <summary>
+        /// EventHandler for changed from selection
+        /// </summary>
+        /// <param name="sender">sender object</param>
+        /// <param name="e">some args</param>
+        private void FromSelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
+        {
+            if (!this.init)
+            {
+                return;
+            }
+
+            this.pageModel.SelectDegreeIndex = this.Degree.SelectedIndex;
+            this.pageModel.SelectFromIndex = this.From.SelectedIndex;
+            this.pageModel.LoadToNumberList();
+            this.To.ItemsSource = this.pageModel.ToNumberList;
+        }
+
         #endregion
 
         #endregion

CampusAppWP8/CampusAppWP8/Pages/News/NewsIndexPage.xaml

@@ -44,4 +44,8 @@
         </ListBox>
     </Grid>
 
+    <phone:PhoneApplicationPage.ApplicationBar>
+        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="False" Mode="Minimized"  Opacity="1.0" >
+        </shell:ApplicationBar>
+    </phone:PhoneApplicationPage.ApplicationBar>
 </phone:PhoneApplicationPage>

CampusAppWP8/CampusAppWP8/Pages/News/NewsIndexPage.xaml.cs

@@ -7,11 +7,12 @@
 //-----------------------------------------------------------------------------
 namespace CampusAppWP8.Pages.News
 {
-    using System.Linq;
+    using System;
     using System.Windows.Navigation;
     using CampusAppWP8.Feed.News;
-    using CampusAppWP8.Utility;
+    using CampusAppWP8.Resources;
     using Microsoft.Phone.Controls;
+    using Microsoft.Phone.Shell;
     
     /// <summary>
     /// Overview page of all news.
@@ -30,6 +31,12 @@ namespace CampusAppWP8.Pages.News
         {
             this.InitializeComponent();
 
+            ApplicationBarIconButton updateBtn = new ApplicationBarIconButton();
+            updateBtn.IconUri = new Uri(Icons.Update, UriKind.Relative);
+            updateBtn.Text = AppResources.UpdateBtn;
+            updateBtn.Click += new EventHandler(this.NewsForceUpdate_Click);
+            ApplicationBar.Buttons.Add(updateBtn);
+
             if (NewsIndexPage.newsFeed == null)
             {
                 NewsIndexPage.newsFeed = new NewsFeed(false);
@@ -66,5 +73,16 @@ namespace CampusAppWP8.Pages.News
         {
             this.NewsList.ItemsSource = NewsIndexPage.newsFeed.Model.Channel[0].Item;
         }
+
+        /// <summary>
+        /// On clicking the update button in the ApplicationBar.
+        /// Force a data update from the web.
+        /// </summary>
+        /// <param name="sender">button object</param>
+        /// <param name="e">event args</param>
+        private void NewsForceUpdate_Click(object sender, EventArgs e)
+        {
+            NewsIndexPage.newsFeed.ForceWebUpdate();
+        }
     }
 }

CampusAppWP8/CampusAppWP8/Pages/News/NewsPage.xaml

@@ -20,7 +20,7 @@
     <!-- LayoutRoot -->
     <Grid x:Name="LayoutRoot" Background="Transparent">
         <!-- Pivotpage -->
-        <phone:Pivot x:Name="NewsPivot" Title="{Binding Path=LocalizedResources.ApplicationTitle, Source={StaticResource LocalizedStrings}}">
+        <phone:Pivot x:Name="NewsPivot" Title="{Binding Path=LocalizedResources.ApplicationTitle, Source={StaticResource LocalizedStrings}}" SelectionChanged="OnPivotSelectionChange">
             <!-- Pivotitem template -->
             <phone:Pivot.HeaderTemplate>
                 <DataTemplate>
@@ -29,10 +29,9 @@
             </phone:Pivot.HeaderTemplate>
             <phone:Pivot.ItemTemplate>
                 <DataTemplate>
-                    <Grid>
+                    <Grid x:Name="NewsParentGrid">
                         <Grid.RowDefinitions>
                             <RowDefinition Height="*"/>
-                            <RowDefinition Height="90"/>
                         </Grid.RowDefinitions>
 
                         <Grid x:Name="NewsTextGrid" Grid.Row="0">
@@ -47,13 +46,15 @@
                             </ScrollViewer>
                         </Grid>
 
-                        <phone:WebBrowser x:Name="WebBrowser" Grid.Row="0" IsScriptEnabled="True" Visibility="Collapsed"/>
-
-                        <Button Name="NewsHome" Content="{Binding Path=LocalizedResources.NewsHomeBtn, Source={StaticResource LocalizedStrings}}" Grid.Row="1" VerticalAlignment="Bottom" HorizontalAlignment="Left" Click="NewsHome_Click"/>
-                        <Button Name="NewsLink" Tag="{Binding Path=Link, Mode=OneWay}" Content="{Binding Path=LocalizedResources.NewsLinkBtn, Source={StaticResource LocalizedStrings}}" Grid.Row="1" VerticalAlignment="Bottom" HorizontalAlignment="Right" Click="NewsLink_Click"/>
+                        <phone:WebBrowser x:Name="NewsWebBrowser" Source="{Binding Path=Link, Mode=OneWay}" Grid.Row="0" IsScriptEnabled="True" Visibility="Collapsed"/>
                     </Grid>
                 </DataTemplate>
             </phone:Pivot.ItemTemplate>
         </phone:Pivot>
     </Grid>
+
+    <phone:PhoneApplicationPage.ApplicationBar>
+        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="False" Mode="Default"  Opacity="1.0" >
+        </shell:ApplicationBar>
+    </phone:PhoneApplicationPage.ApplicationBar>
 </phone:PhoneApplicationPage>

CampusAppWP8/CampusAppWP8/Pages/News/NewsPage.xaml.cs

@@ -13,8 +13,11 @@ namespace CampusAppWP8.Pages.News
     using System.Windows;
     using System.Windows.Controls;
     using System.Windows.Navigation;
+    using CampusAppWP8.Resources;
+    using CampusAppWP8.Utility;
     using Microsoft.Phone.Controls;
-
+    using Microsoft.Phone.Shell;
+    
     /// <summary>
     /// EventPage, where every news fees has his own PivotItem.
     /// </summary>
@@ -25,12 +28,23 @@ namespace CampusAppWP8.Pages.News
         /// </summary>
         private bool isSourceSet = false;
 
+        /// <summary>
+        /// To store the index of the last selected PivotItem.
+        /// </summary>
+        private int lastSelectedIndex = -1;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="NewsPage" /> class.
         /// </summary>
         public NewsPage()
         {
             this.InitializeComponent();
+
+            ApplicationBarIconButton linkBtn = new ApplicationBarIconButton();
+            linkBtn.IconUri = new Uri(Icons.Link, UriKind.Relative);
+            linkBtn.Text = AppResources.NewsLinkBtn;
+            linkBtn.Click += new EventHandler(this.NewsLink_Click);
+            ApplicationBar.Buttons.Add(linkBtn);
         }
 
         /// <summary>
@@ -53,7 +67,7 @@ namespace CampusAppWP8.Pages.News
             string pivotIndex = string.Empty;
 
             // Navigate to the selected pivotitem
-            if (NavigationContext.QueryString.TryGetValue("pivotindex", out pivotIndex))
+            if (NavigationContext.QueryString.TryGetValue(Constants.ParamPivotIndex, out pivotIndex))
             {
                 int pivotIndexInt = int.Parse(pivotIndex);
 
@@ -70,15 +84,22 @@ namespace CampusAppWP8.Pages.News
         }
 
         /// <summary>
-        /// On clicking the home button (lower left).
-        /// Navigate back to the news index page.
+        /// Called when the index of the selected PivotItem is changed.
+        /// Set the text Grid to visible and the WebBrowser to collapsed.
         /// </summary>
-        /// <param name="sender">clicked button</param>
+        /// <param name="sender">parent pivot object</param>
         /// <param name="e">event args</param>
-        private void NewsHome_Click(object sender, RoutedEventArgs e)
+        private void OnPivotSelectionChange(object sender, SelectionChangedEventArgs e)
         {
-            // Navigate back to the news index page
-            NavigationService.GoBack();
+            int selIndex = (sender as Pivot).SelectedIndex;
+
+            if (this.lastSelectedIndex > -1)
+            {
+                Utilities.SetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsWebBrowser", Visibility.Collapsed, this.lastSelectedIndex);
+                Utilities.SetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsTextGrid", Visibility.Visible, this.lastSelectedIndex);
+            }
+
+            this.lastSelectedIndex = selIndex;
         }
 
         /// <summary>
@@ -88,41 +109,17 @@ namespace CampusAppWP8.Pages.News
         /// </summary>
         /// <param name="sender">clicked button</param>
         /// <param name="e">event args</param>
-        private void NewsLink_Click(object sender, RoutedEventArgs e)
+        private void NewsLink_Click(object sender, EventArgs e)
         {
-            FrameworkElement fe = sender as FrameworkElement;
-
-            // Open the webbrowser
-            Grid grfe = fe.Parent as Grid;
-            FrameworkElement newsTextGrid = null;
-            FrameworkElement newsWeb = null;
-
-            foreach (FrameworkElement tempElem in grfe.Children)
+            if (Visibility.Visible == Utilities.GetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsTextGrid", this.NewsPivot.SelectedIndex))
             {
-                if (tempElem.Name == "NewsTextGrid")
-                {
-                    newsTextGrid = tempElem;
-                }
-                else if (tempElem.Name == "WebBrowser")
-                {
-                    newsWeb = tempElem;
-                }
+                Utilities.SetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsTextGrid", Visibility.Collapsed, this.NewsPivot.SelectedIndex);
+                Utilities.SetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsWebBrowser", Visibility.Visible, this.NewsPivot.SelectedIndex);
             }
-
-            if ((newsTextGrid != null)
-            && (newsWeb != null))
+            else
             {
-                if (newsTextGrid.Visibility == Visibility.Visible)
-                {
-                    newsTextGrid.Visibility = Visibility.Collapsed;
-                    newsWeb.Visibility = Visibility.Visible;
-                    (newsWeb as WebBrowser).Navigate(new Uri(fe.Tag.ToString(), UriKind.Absolute));
-                }
-                else
-                {
-                    newsWeb.Visibility = Visibility.Collapsed;
-                    newsTextGrid.Visibility = Visibility.Visible;
-                }
+                Utilities.SetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsWebBrowser", Visibility.Collapsed, this.NewsPivot.SelectedIndex);
+                Utilities.SetElementVisibility(this.NewsPivot, "NewsParentGrid", "NewsTextGrid", Visibility.Visible, this.NewsPivot.SelectedIndex);
             }
         }
     }

CampusAppWP8/CampusAppWP8/Properties/WMAppManifest.xml

@@ -19,9 +19,9 @@
     <Tokens>
       <PrimaryToken TokenID="CampusAppWP8Token" TaskName="_default">
         <TemplateFlip>
-          <SmallImageURI IsRelative="true" IsResource="false">Assets\Tiles\FlipCycleTileSmall.png</SmallImageURI>
+          <SmallImageURI IsRelative="true" IsResource="false">Assets\Tiles\kachel_small.png</SmallImageURI>
           <Count>0</Count>
-          <BackgroundImageURI IsRelative="true" IsResource="false">Assets\Tiles\FlipCycleTileMedium.png</BackgroundImageURI>
+          <BackgroundImageURI IsRelative="true" IsResource="false">Assets\Tiles\kachel_medium.png</BackgroundImageURI>
           <Title>CampusAppWP8</Title>
           <BackContent>
           </BackContent>
@@ -29,10 +29,13 @@
           </BackBackgroundImageURI>
           <BackTitle>
           </BackTitle>
+          <LargeBackgroundImageURI IsRelative="true" IsResource="false">Assets\Tiles\kachel_large.png</LargeBackgroundImageURI>
+          <LargeBackContent />
+          <LargeBackBackgroundImageURI IsRelative="true" IsResource="false">
+          </LargeBackBackgroundImageURI>
           <DeviceLockImageURI>
           </DeviceLockImageURI>
-          <HasLarge>
-          </HasLarge>
+          <HasLarge>True</HasLarge>
         </TemplateFlip>
       </PrimaryToken>
     </Tokens>

CampusAppWP8/CampusAppWP8/Resources/AppResources.Designer.cs

@@ -645,6 +645,15 @@ namespace CampusAppWP8.Resources {
             }
         }
         
+        /// <summary>
+        ///   Sucht eine lokalisierte Zeichenfolge, die Aktualisieren ähnelt.
+        /// </summary>
+        public static string UpdateBtn {
+            get {
+                return ResourceManager.GetString("UpdateBtn", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Sucht eine lokalisierte Zeichenfolge, die Willkommen zur BTU-CampusApp WP8 ähnelt.
         /// </summary>

CampusAppWP8/CampusAppWP8/Resources/AppResources.resx

@@ -317,4 +317,7 @@
   <data name="LinkApp_CommonLinks" xml:space="preserve">
     <value>allg. Links</value>
   </data>
+  <data name="UpdateBtn" xml:space="preserve">
+    <value>Aktualisieren</value>
+  </data>
 </root>

CampusAppWP8/CampusAppWP8/Resources/Icons.Designer.cs

@@ -255,6 +255,17 @@ namespace CampusAppWP8.Resources
             }
         }
 
+        /// <summary>
+        /// Gets the uri string of the update icon.
+        /// </summary>
+        public static string Update
+        {
+            get
+            {
+                return Themerize("Update");
+            }
+        }
+
         /// <summary>
         /// Return the theme depending string of a icon.
         /// </summary>

CampusAppWP8/CampusAppWP8/Resources/Icons.resx

@@ -165,6 +165,9 @@
   <data name="StudentCouncil" xml:space="preserve">
     <value>student_council_159.png</value>
   </data>
+  <data name="Update" xml:space="preserve">
+    <value>update_159.png</value>
+  </data>
   <data name="WebMail" xml:space="preserve">
     <value>webmail_159.png</value>
   </data>

CampusAppWP8/CampusAppWP8/Utility/Utilities.cs

@@ -8,19 +8,61 @@
 namespace CampusAppWP8.Utility
 {
     using System;
-
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Windows;
+    using System.Windows.Controls;
+    using System.Windows.Media;
+    
+    /// <summary>
+    /// Collection of utility functions.
+    /// </summary>
     public static class Utilities
     {
+        /// <summary>
+        /// Comparison types.
+        /// </summary>
         public enum DifferenceType
         {
+            /// <summary>
+            /// Compare Equality.
+            /// </summary>
             Equal,
+            
+            /// <summary>
+            /// Compare if less.
+            /// </summary>
             Less,
+            
+            /// <summary>
+            /// Compare equality or less.
+            /// </summary>
             LessEqual,
+            
+            /// <summary>
+            /// Compare greater.
+            /// </summary>
             Greater,
+
+            /// <summary>
+            /// Compare equality or greater.
+            /// </summary>
             GreaterEqual
-        };
-
+        }
 
+        /// <summary>
+        /// Compares the difference between a specified DateTime and Now
+        /// and the specified time difference (in Days).
+        /// <example>
+        /// When type is DifferenceType.Less, the timespan between Now and date
+        /// is 5.0 (days) and totalDiff is 7.0, the function will return true,
+        /// because the timespan is Less then 7.0 .
+        /// </example>
+        /// </summary>
+        /// <param name="type">comparison type</param>
+        /// <param name="date">date to check</param>
+        /// <param name="totalDiff">difference to check</param>
+        /// <returns>true, if the comparison condition do not fail</returns>
         public static bool DayDifference(DifferenceType type, DateTime date, double totalDiff)
         {
             bool retValue = false;
@@ -53,5 +95,95 @@ namespace CampusAppWP8.Utility
 
             return retValue;
         }
+
+        /// <summary>
+        /// Return a list of child UIElements of the root object with the specified element name.
+        /// </summary>
+        /// <param name="rootObj">root object</param>
+        /// <param name="elemName">name of the element(s)</param>
+        /// <returns>list of elements</returns>
+        public static List<DependencyObject> GetChild(DependencyObject rootObj, string elemName)
+        {
+            List<DependencyObject> retValue = new List<DependencyObject>();
+
+            for (int k = 0; k < VisualTreeHelper.GetChildrenCount(rootObj); k++)
+            {
+                var child = VisualTreeHelper.GetChild(rootObj, k);
+
+                if ((child as FrameworkElement).Name.Equals(elemName))
+                {
+                    retValue.Add(child);
+                }
+
+                var ret = retValue.Concat<DependencyObject>(GetChild(child as DependencyObject, elemName));
+                retValue = ret.ToList<DependencyObject>();
+            }
+
+            return retValue;
+        }
+
+        /// <summary>
+        /// Search for a UIElement with the specified name in the parent Grid and set its visibility.
+        /// </summary>
+        /// <param name="rootObj">root object</param>
+        /// <param name="parentGridName">name of the parent grid</param>
+        /// <param name="elemName">name of the UIElement</param>
+        /// <param name="vis">new visibility property state</param>
+        /// <param name="index">index of the element in the parent child list</param>
+        public static void SetElementVisibility(DependencyObject rootObj, string parentGridName, string elemName, Visibility vis, int index = 0)
+        {
+            List<DependencyObject> l = Utilities.GetChild(rootObj, parentGridName);
+            Grid parentGrid = l[index] as Grid;
+            FrameworkElement elem = null;
+            
+            foreach (FrameworkElement tempElem in parentGrid.Children)
+            {
+                if (tempElem.Name == elemName)
+                {
+                    elem = tempElem;
+                }
+            }
+
+            if (elem != null)
+            {
+                elem.Visibility = vis;
+            }
+        }
+
+        /// <summary>
+        /// Return the visibility property of a UIElement which is a child object of the specified parent grid element.
+        /// </summary>
+        /// <param name="rootObj">root object</param>
+        /// <param name="parentGridName">name of the parent grid</param>
+        /// <param name="elemName">name of the element</param>
+        /// <param name="index">index of the element in the child list of the parent</param>
+        /// <returns>visibility state</returns>
+        public static Visibility GetElementVisibility(DependencyObject rootObj, string parentGridName, string elemName, int index = 0)
+        {
+            Visibility retValue;
+
+            List<DependencyObject> l = Utilities.GetChild(rootObj, parentGridName);
+            Grid parentGrid = l[index] as Grid;
+            FrameworkElement elem = null;
+
+            foreach (FrameworkElement tempElem in parentGrid.Children)
+            {
+                if (tempElem.Name == elemName)
+                {
+                    elem = tempElem;
+                }
+            }
+
+            if (elem != null)
+            {
+                retValue = elem.Visibility;
+            }
+            else
+            {
+                throw new NotImplementedException("Could not find a UIElement with name (" + elemName + ")");
+            }
+
+            return retValue;
+        }
     }
 }