Error in hosting WCF on IIS

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C#

WCF

C#4.0

Hello,

I have create a json based WCF, Which is running correctly on local but throws error when we host it on IIS and access that online service.I searched a lot on google bu did not find any solution.

My service Inteface:

[ServiceContract]
public interface IInstaearnService
{
  [WebInvoke(Method = "GET", BodyStyle = WebMessageBodyStyle.Wrapped,
   RequestFormat = WebMessageFormat.Json, ResponseFormat =
   WebMessageFormat.Json,UriTemplate = "GetApps")]
  [OperationContract]
   string GetApps();
}

My service Class:

public class InstaearnService : IInstaearnService
{
public string GetApps()
     {
         try
         {
             ClsApp objClsApp = new ClsApp();
             using (SqlConnection con = new    SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString))
             {
                 #region Get app
                 con.Open();
                 string sAppQry = "Select Id, Name, ImageName, State, Location, Age, InstallPoints, OpenPoints, RegisterPoints, Url" +
                                  " from mstAppDetails" +
                                  " where OfferFrom <= convert(date, getdate()) and OfferTo>=convert(date, getdate())" +
                                  " and status=1";

                 using (SqlDataAdapter sqlDa = new SqlDataAdapter(sAppQry, con))
                 {
                     DataSet dsApp = new DataSet();
                     sqlDa.Fill(dsApp);

                     if (dsApp != null && dsApp.Tables.Count > 0 && dsApp.Tables[0].Rows.Count > 0)
                     {
                         for (int i = 0; i < dsApp.Tables[0].Rows.Count; i++)
                         {
                             ClsApp objInnerClsApp = new ClsApp();
                             objInnerClsApp.sId = dsApp.Tables[0].Rows[i]["Id"].ToString();
                             objInnerClsApp.sName = dsApp.Tables[0].Rows[i]["Name"].ToString();
                             objInnerClsApp.sImageName = dsApp.Tables[0].Rows[i]["ImageName"].ToString();
                             objInnerClsApp.sState = dsApp.Tables[0].Rows[i]["State"].ToString();
                             objInnerClsApp.sLocation = dsApp.Tables[0].Rows[i]["Location"].ToString();
                             objInnerClsApp.iAge = Convert.ToInt32(dsApp.Tables[0].Rows[i]["Age"]);
                             objInnerClsApp.iInstallPoints = Convert.ToInt32(dsApp.Tables[0].Rows[i]["InstallPoints"]);
                             objInnerClsApp.iOpenPoints = Convert.ToInt32(dsApp.Tables[0].Rows[i]["OpenPoints"]);
                             objInnerClsApp.iRegisterPoints = Convert.ToInt32(dsApp.Tables[0].Rows[i]["RegisterPoints"]);
                             objInnerClsApp.sUrl = dsApp.Tables[0].Rows[i]["Url"].ToString();

                             objClsApp.lstClsApp.Add(objInnerClsApp);
                         }
                     }
                 }
                 #endregion
             }

             string sJsonResult = JsonConvert.SerializeObject(objClsApp);

             return sJsonResult;
         }
         catch (Exception ex1)
         {
             return ex1.InnerException.ToString();
         }
     }
}

My Web.config:

<system.serviceModel>
    <protocolMapping>
      <add binding="webHttpBinding" scheme="https" />
    </protocolMapping>
    <bindings>
      <webHttpBinding>
        <binding name="webHttp" allowCookies="true"
                 maxReceivedMessageSize="20000000"
                 maxBufferSize="20000000"
                 maxBufferPoolSize="20000000">
          <readerQuotas maxDepth="32"
               maxArrayLength="200000000"
               maxStringContentLength="200000000"/>
        </binding>
      </webHttpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="false" />
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="webBehavior">
          <webHttp helpEnabled="true" />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <services>
      <service name="InstaearnServices.InstaearnService">
        <endpoint address="http://localhost:51193/InstaearnService.svc" contract="InstaearnServices.IInstaearnService" binding="webHttpBinding" behaviorConfiguration="webBehavior" />
        <endpoint contract="IMetadataExchange" binding="mexHttpBinding" address="mex" />
      </service>
    </services>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="false" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
    <directoryBrowse enabled="true" />
  </system.webServer>
  <system.diagnostics>
    <sources>
      <source name="UserTraceSource" switchValue="Warning, ActivityTracing">
        <listeners>
          <add name="xml" type="System.Diagnostics.XmlWriterTraceListener" initializeData="C:\Logs\UserTraces.svclog" />
        </listeners>
      </source>
    </sources>
    <trace autoflush="true" />
  </system.diagnostics>

I am getting following error:

<message>Object reference not set to an instance of an object.
<stacktrace><![CDATA[at TestApp.Resolve[T]() in C:\Users\TestApp\getApp.cs:line 77
at TestApp.getApp() in C:\Users\TestApp\getApp.cs:line 77
at WCF.Services.TestApp.GetApp() in
C:\Users\TestApp\getApp.cs:line:line 20
at SyncInvokeValidateUser(Object , Object[] )

Please provide my some solution.

Thanks in advance.