diff --git a/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj b/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj
index 1c76561c..30b3410b 100644
--- a/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj
+++ b/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj
@@ -206,8 +206,6 @@
       <DependentUpon>Constants.resx</DependentUpon>
     </Compile>
     <Compile Include="ThemelizedIcons.cs" />
-    <Compile Include="Utility\Api.cs" />
-    <Compile Include="Utility\ApiEventHandler.cs" />
     <Compile Include="Utility\File.cs" />
     <Compile Include="Utility\Logger.cs" />
     <Compile Include="Utility\HttpRequest.cs" />
@@ -221,7 +219,6 @@
     <Compile Include="Utility\Utilities.cs">
       <SubType>Code</SubType>
     </Compile>
-    <Compile Include="Utility\XmlApi.cs" />
     <Compile Include="Utility\XmlManager.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/CampusAppWP8/CampusAppWP8/Model/Utility/URLParamModel.cs b/CampusAppWP8/CampusAppWP8/Model/Utility/URLParamModel.cs
index c8d9c1a2..186f6d61 100644
--- a/CampusAppWP8/CampusAppWP8/Model/Utility/URLParamModel.cs
+++ b/CampusAppWP8/CampusAppWP8/Model/Utility/URLParamModel.cs
@@ -60,6 +60,17 @@ namespace CampusAppWP8.Model.Utility
                 return this.key;
             }
         }
+
+        /// <summary>
+        /// Gets or sets the token, which indicate that tha paramterlist started
+        /// </summary>
+        public string ParamToken
+        {
+            get
+            {
+                return "?";
+            }
+        }
         #endregion
 
         #region Methods
diff --git a/CampusAppWP8/CampusAppWP8/Utility/Api.cs b/CampusAppWP8/CampusAppWP8/Utility/Api.cs
deleted file mode 100644
index a0178de8..00000000
--- a/CampusAppWP8/CampusAppWP8/Utility/Api.cs
+++ /dev/null
@@ -1,144 +0,0 @@
-//-----------------------------------------------------------------------
-// <copyright file="Api.cs" company="BTU/IIT">
-//     Company copyright tag.
-// </copyright>
-// <author>stubbfel</author>
-// <sience>19.06.2013</sience>
-//----------------------------------------------------------------------
-namespace CampusAppWP8.Utility
-{
-    using System;
-    using System.Collections.Generic;
-    using System.Net;
-    using CampusAppWP8.Model.Utility;
-
-    /// <summary>
-    /// This abstract Class is for API
-    /// </summary>
-    /// <typeparam name="T">Type for model of the API</typeparam>
-    public abstract class Api<T> : HttpRequest
-    {
-        #region Members
-
-        /// <summary>
-        /// EventHandler of the API
-        /// </summary>
-        private readonly ApiEventHandler eventHandler;
-
-        /// <summary>
-        /// The model of the API
-        /// </summary>
-        private T model;
-
-        #endregion
-
-        #region Constructor
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="Api{T}" /> class.
-        /// </summary>
-        /// <param name="apiBaseAddress">BaseUrl of the API</param>
-        public Api(Uri apiBaseAddress)
-            : base(apiBaseAddress)
-        {
-            this.eventHandler = new ApiEventHandler();
-        }
-
-        #endregion
-
-        #region Proberty
-
-        /// <summary>
-        /// Gets or sets for the model of the API
-        /// </summary>
-        public T Model
-        {
-            get
-            {
-                return this.model;
-            }
-
-            set
-            {
-                if ((value == null && this.model != null) || !value.Equals(this.model))
-                {
-                    this.model = value;
-                }
-            }
-        }
-
-        /// <summary>
-        /// Gets for the event-handler of the API
-        /// </summary>
-        public ApiEventHandler EventHandler
-        {
-            get { return this.eventHandler; }
-        }
-        #endregion
-
-        #region Methods
-
-        #region public
-
-        /// <summary>
-        /// Method send an HTTP-Get for an API
-        /// </summary>
-        /// <param name="parameters">list of GetParameter</param>
-        public void ApiGet(List<UrlParamModel> parameters)
-        {
-            Uri getUrl = this.CreateGetUrl(parameters);
-            this.HttpGet(getUrl, this.DownloadCompleted);
-        }
-        #endregion
-
-        #region protected
-
-        /// <summary>
-        /// Method implement the deserialization a Xml-API
-        /// </summary>
-        /// <param name="xmlString">content of the API</param>
-        protected abstract void Deserialization(string xmlString);
-
-        #endregion
-
-        #region private
-
-        /// <summary>
-        /// Method create the model of the API
-        /// </summary>
-        /// <param name="resultString">content of the API</param>
-        private void CreateModel(string resultString)
-        {
-            if (resultString == null || resultString == string.Empty)
-            {
-                return;
-            }
-
-            this.Deserialization(resultString);
-            this.EventHandler.FireApiReadyevent();
-        }
-
-        /// <summary>
-        /// Method will be execute if the download of the API is completed and create the model
-        /// </summary>
-        /// <param name="sender">Sender of the event</param>
-        /// <param name="e">Arguments of the event</param>
-        private void DownloadCompleted(object sender, DownloadStringCompletedEventArgs e)
-        {
-            Exception downloadError = e.Error;
-            if (downloadError != null)
-            {
-                return;
-            }
-
-            string downloadResult = e.Result;
-            if (downloadResult != null && !downloadResult.Equals(string.Empty))
-            {
-                this.CreateModel(downloadResult);
-            }
-        }
-        #endregion
-
-        #endregion
-    }
-}
diff --git a/CampusAppWP8/CampusAppWP8/Utility/ApiEventHandler.cs b/CampusAppWP8/CampusAppWP8/Utility/ApiEventHandler.cs
deleted file mode 100644
index ddb1baaa..00000000
--- a/CampusAppWP8/CampusAppWP8/Utility/ApiEventHandler.cs
+++ /dev/null
@@ -1,47 +0,0 @@
-//-----------------------------------------------------------------------
-// <copyright file="ApiEventHandler.cs" company="BTU/IIT">
-//     Company copyright tag.
-// </copyright>
-// <author>stubbfel</author>
-// <sience>17.06.2013</sience>
-//----------------------------------------------------------------------
-namespace CampusAppWP8.Utility
-{
-    /// <summary>
-    /// This class handle the events of a API <see cref="RestApi{T}"/>
-    /// </summary>
-    public class ApiEventHandler
-    {
-        /// <summary>
-        /// Initializes a new instance of the <see cref="ApiEventHandler" /> class.
-        /// </summary>
-        public ApiEventHandler()
-        {
-        }
-
-        #region Delegate&Events
-        /// <summary>
-        /// Delegate for the ready event
-        /// </summary>
-        public delegate void ApiReadyHandler();
-
-        /// <summary>
-        /// The ready event
-        /// </summary>
-        public event ApiReadyHandler ApiIsReadyEvent;
-
-        #endregion
-
-        #region Method
-
-        /// <summary>
-        /// Method fire a ready event
-        /// </summary>
-        public void FireApiReadyevent()
-        {
-            this.ApiIsReadyEvent();
-        }
-
-        #endregion
-    }
-}
diff --git a/CampusAppWP8/CampusAppWP8/Utility/HttpRequest.cs b/CampusAppWP8/CampusAppWP8/Utility/HttpRequest.cs
index 665a004f..859a8982 100644
--- a/CampusAppWP8/CampusAppWP8/Utility/HttpRequest.cs
+++ b/CampusAppWP8/CampusAppWP8/Utility/HttpRequest.cs
@@ -68,12 +68,18 @@ namespace CampusAppWP8.Utility
         public Uri CreateGetUrl(List<UrlParamModel> parameters)
         {
             string paramterStr = string.Empty;
+            string seperator = string.Empty;
             foreach (UrlParamModel parameter in parameters)
             {
+                if (string.Empty.Equals(seperator))
+                {
+                    seperator = parameter.ParamToken;
+                }
+
                 paramterStr += parameter.ToString();
             }
 
-            string getUrlStr = baseAddress + "?" + paramterStr;
+            string getUrlStr = baseAddress + seperator + paramterStr;
             return new Uri(getUrlStr, UriKind.Absolute);
         }
 
diff --git a/CampusAppWP8/CampusAppWP8/Utility/XmlApi.cs b/CampusAppWP8/CampusAppWP8/Utility/XmlApi.cs
deleted file mode 100644
index 2f1aa0e3..00000000
--- a/CampusAppWP8/CampusAppWP8/Utility/XmlApi.cs
+++ /dev/null
@@ -1,84 +0,0 @@
-//-----------------------------------------------------------------------
-// <copyright file="XmlApi.cs" company="BTU/IIT">
-//     Company copyright tag.
-// </copyright>
-// <author>stubbfel</author>
-// <sience>13.06.2013</sience>
-//----------------------------------------------------------------------
-namespace CampusAppWP8.Utility
-{
-    using System;
-    using System.Collections.Generic;
-    using System.Net;
-    using CampusAppWP8.Model.Utility;
-    using CampusAppWP8.Resources;
-
-    /// <summary>
-    /// This abstract Class is for Xml-API
-    /// </summary>
-    /// <typeparam name="T">Type for model of the API</typeparam>
-    public abstract class XmlApi<T> : Api<T>
-    {
-        #region Members
-        
-        /// <summary>
-        /// Variable for the name of the root-tag
-        /// </summary>
-        private string validRootName;
-
-        #endregion
-
-        #region Constructor
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="XmlApi{T}" /> class.
-        /// </summary>
-        /// <param name="apiBaseAddress">BaseUrl of the API</param>
-        public XmlApi(Uri apiBaseAddress)
-            : base(apiBaseAddress)
-        {
-            this.validRootName = Constants.XMLRootElementName;
-        }
-
-        #endregion
-
-        #region Proberty
-
-        /// <summary>
-        /// Gets or sets the ValidRootName of the API
-        /// </summary>
-        protected string ValidRootName 
-        { 
-            get
-            {
-                return this.validRootName;
-            }
-
-            set
-            {
-                if (value != this.validRootName)
-                {
-                    this.validRootName = value;
-                }
-            }
-        }
-
-        #endregion
-
-        #region Methods
-        
-        /// <summary>
-        /// Method implement the deserialization a Xml-API
-        /// </summary>
-        /// <param name="xmlString">content of the API</param>
-        protected override void Deserialization(string xmlString)
-        {
-            T model = XmlManager.DeserializationToModel<T>(xmlString, this.ValidRootName);
-            if (model != null)
-            {
-                this.Model = model;
-            }
-        }
-        #endregion
-    }
-}