diff --git a/CampusAppWP8/CampusAppWP8/Utility/RestApi.cs b/CampusAppWP8/CampusAppWP8/Utility/RestApi.cs
index af5bd7f9..49a94bbe 100644
--- a/CampusAppWP8/CampusAppWP8/Utility/RestApi.cs
+++ b/CampusAppWP8/CampusAppWP8/Utility/RestApi.cs
@@ -1,12 +1,10 @@
-
-//-----------------------------------------------------------------------
-// <copyright file="Feed.cs" company="BTU/IIT">
+//-----------------------------------------------------------------------
+// <copyright file="RestApi.cs" company="BTU/IIT">
 //     Company copyright tag.
 // </copyright>
 // <author>stubbfel</author>
-// <sience>03.05.2013</sience>
+// <sience>10.06.2013</sience>
 //----------------------------------------------------------------------using System;
-
 namespace CampusAppWP8.Utility
 {
     using System;
@@ -16,27 +14,172 @@ namespace CampusAppWP8.Utility
     using System.Text;
     using System.Threading.Tasks;
 
+    /// <summary>
+    /// Class realize the access of  restful RestAPI 
+    /// </summary>
     public class RestApi
     {
         #region Members
-        WebClient client;
+
+        /// <summary>
+        /// the WebClient, which send the requests
+        /// </summary>
+        private WebClient client;
+
         #endregion
 
         #region Constructor
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="RestApi" /> class.
+        /// </summary>
         public RestApi()
         {
-            client = new WebClient();
+            this.client = new WebClient();
         }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="RestApi" /> class.
+        /// </summary>
+        /// <param name="apiBaseAddress">the url of the RestAPI base address</param>
+        public RestApi(Uri apiBaseAddress)
+        {
+            this.client = new WebClient();
+            this.client.BaseAddress = apiBaseAddress.AbsoluteUri;
+        }
+
         #endregion
 
         #region Methods
         #region public
-        public void  HttpGet(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
+
+        /// <summary>
+        /// Method realize the http-get-method resource
+        /// </summary>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        public void HttpGet(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
         {
-            client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(action);
-            client.DownloadStringAsync(url);
+            this.client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(action);
+            this.client.DownloadStringAsync(url);
+        }
+
+        /// <summary>
+        /// Method realize the http-delete-method
+        /// </summary>
+        /// <remarks>
+        /// is not supported by WebClient
+        /// </remarks>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        public void HttpDelete(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
+        {
+            throw new NotSupportedException();
+        }
+
+        /// <summary>
+        /// Method realize the http-delete-method
+        /// </summary>
+        /// <remarks>
+        /// is not supported by WebClient
+        /// </remarks>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        public void HttpHead(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
+        {
+            throw new NotSupportedException();
+        }
+
+        /// <summary>
+        /// Method realize the http-delete-method
+        /// </summary>
+        /// <remarks>
+        /// is not supported by WebClient
+        /// </remarks>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        public void HttpOptions(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
+        {
+            throw new NotSupportedException();
+        }
+
+        /// <summary>
+        /// Method realize the http-delete-method
+        /// </summary>
+        /// <remarks>
+        /// is not supported by WebClient
+        /// </remarks>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        public void HttpConnect(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
+        {
+            throw new NotSupportedException();
+        }
+
+        /// <summary>
+        /// Method realize the http-delete-method
+        /// </summary>
+        /// <remarks>
+        /// is not supported by WebClient
+        /// </remarks>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        public void HttpTrace(Uri url, Action<object, DownloadStringCompletedEventArgs> action)
+        {
+            throw new NotSupportedException();
+        }
+
+        /// <summary>
+        /// Method realize the http-post-method
+        /// </summary>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        /// <param name="postData">Data which are sending via post to the RestAPI</param>
+        public void HttpPost(Uri url, Action<object, UploadStringCompletedEventArgs> action, string postData)
+        {
+            this.UploadData(url, action, "POST", postData);
+        }
+
+        /// <summary>
+        /// Method realize the http-get-method
+        /// </summary>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        /// <param name="putData">Data which are sending via put to the RestAPI</param>
+        public void HttpPut(Uri url, Action<object, UploadStringCompletedEventArgs> action, string putData)
+        {
+            this.UploadData(url, action, "PUT", putData);
+        }
+
+        /// <summary>
+        /// Method realize the http-get-method
+        /// </summary>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        /// <param name="patchData">Data which are sending via patch to the RestAPI</param>
+        public void HttpPatch(Uri url, Action<object, UploadStringCompletedEventArgs> action, string patchData)
+        {
+            this.UploadData(url, action, "PATCH", patchData);
+        }
+
+        #endregion
+
+        #region private
+
+        /// <summary>
+        /// Method uploaded Data to the RestAPI
+        /// </summary>
+        /// <param name="url">Url of the resource</param>
+        /// <param name="action">callback method</param>
+        /// <param name="method">name of APIMethod, how the data will be uploaded</param>
+        /// <param name="data">Data which are sending to the RestAPI</param>
+        private void UploadData(Uri url, Action<object, UploadStringCompletedEventArgs> action, string method, string data)
+        {
+            this.client.UploadStringCompleted += new UploadStringCompletedEventHandler(action);
+            this.client.UploadStringAsync(url, method, data);
         }
         #endregion
+
         #endregion
     }
 }
diff --git a/CampusAppWP8/CampusAppWP8/utility/Feed.cs b/CampusAppWP8/CampusAppWP8/utility/Feed.cs
index 3a69c342..456ad521 100644
--- a/CampusAppWP8/CampusAppWP8/utility/Feed.cs
+++ b/CampusAppWP8/CampusAppWP8/utility/Feed.cs
@@ -119,8 +119,6 @@ namespace CampusAppWP8.Utility
         /// </summary>
         public void LoadFeed()
         {
-            this.DownloadFeed();
-            return;
             if (this.IsModelUpToDate())
             {
                 return;