Hi all i want to access azure tables entities from windows phone either using

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Asked: June 8, 20262026-06-08T22:14:34+00:00 2026-06-08T22:14:34+00:00

Hi all i want to access azure tables entities from windows phone either using

0

Hi all i want to access azure tables entities from windows phone either using rest API or using Odata.
I have written a code but that this giving me NULL response. Every time i want to access a table entity i call GetEntity function. Below is the code that i am using.
Please if anybody know what wrong in this code or any help reply asap.

//////////// GetEntity Function.//////////

     private void GetEntity(String tableName, String partitionKey, String rowKey)
    {
        String requestMethod = "GET";

        String urlPath = String.Format("{0}(PartitionKey='{1}',RowKey='{2}')", tableName,   partitionKey, rowKey);


        String dateInRfc1123Format = DateTime.Now.ToString("R", System.Globalization.CultureInfo.InvariantCulture);

        String canonicalizedResource = String.Format("/{0}/{1}", AzureStorageConstants.Account, urlPath);
        String stringToSign = String.Format(
              "{0}\n\n\n{1}\n{2}",
              requestMethod,
              dateInRfc1123Format,
              canonicalizedResource);
        String authorizationHeader = CreateAuthorizationHeader(stringToSign);
        HttpWebResponse response;
        Uri uri = new Uri(AzureStorageConstants.TableEndPoint + urlPath);


        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
        request = (HttpWebRequest)WebRequest.Create(uri);
        request.Method = requestMethod;
        request.Headers[HttpRequestHeader.ProxyAuthorization] = null;
        request.Headers["Address"] = uri.ToString();
        request.Headers["Method"] = requestMethod;
        request.Headers["x-ms-date"]= DateTime.Now.ToString("R", System.Globalization.CultureInfo.InvariantCulture);
        request.Headers["x-ms-version"]= "2011-08-18";            
        request.Headers["Authorization"] = authorizationHeader;
        request.Headers["Accept-Charset"] = "UTF-8";
        request.Headers["ContentType"] = "application/atom+xml,application/xml";
        request.ContentType = "application/atom+xml,application/xml";
        request.Headers["DataServiceVersion"] = "1.0;NetFx";
        request.Headers["MaxDataServiceVersion"] = "1.0;NetFx";

       using (response = GetResponse(request))
        {
            Stream dataStream = response.GetResponseStream();
            using (StreamReader reader = new StreamReader(dataStream))
            {
                String responseFromServer = reader.ReadToEnd();
            }
        }
    }

// GetResponse Function.

       public HttpWebResponse GetResponse(HttpWebRequest request)
       {
        var dataReady = new AutoResetEvent(false);
        HttpWebResponse response = null;
        var callback = new AsyncCallback(delegate(IAsyncResult asynchronousResult)
        {
            response = (HttpWebResponse)request.EndGetResponse(asynchronousResult);
            dataReady.Set();
        });

        request.BeginGetResponse(callback, request);
            return response;
    }

////// CreateAuthorization Function.///

      private String CreateAuthorizationHeader(String canonicalizedString)
    {
   String signature = string.Empty;
 using (HMACSHA256 hmacSha256 = new HMACSHA256(Convert.FromBase64String(AzureStorageConstants.Key))) 

 {
     Byte[] dataToHmac = System.Text.Encoding.UTF8.GetBytes(canonicalizedString);
     signature = Convert.ToBase64String(hmacSha256.ComputeHash(dataToHmac));
 }

String authorizationHeader = String.Format(
       CultureInfo.InvariantCulture,
       "{0} {1}:{2}",
       AzureStorageConstants.SharedKeyAuthorizationScheme,
       AzureStorageConstants.Account,
       signature);

return authorizationHeader;

}

////////AzureStorageConstants.

      public static class AzureStorageConstants
    {


     private static String TableAccount = "datablobs";
     private static String cloudEndPointFormat = "http://" + TableAccount + ".table.core.windows.net/";


    private static String cloudKey = "Primary Access Key";// Here actual key is written.
    private static string AzureStorage_SharedKeyAuthorizationScheme = "SharedKey";


        public static String Account
        {
            get { return TableAccount; }
        }

        public static string SharedKeyAuthorizationScheme
        {
            get { return AzureStorage_SharedKeyAuthorizationScheme; }
        }

        public static string Key
        {
            get { return  cloudKey; }
        }

        public static String TableEndPoint
        {
            get { return cloudEndPointFormat; }
        }
    }