Trouble Databinding RIA Service

[Justin]

I worked through the Databinding > RIA tutorial on page 91 of the RadControls Silverlight courseware pdf line by line. When I run it IE crashes and I get the error below. Any Ideas?:

{System.ServiceModel.DomainServices.Client.DomainOperationException: Load operation failed for query 'GetWorkforceSeparationCurrent1'. The remote server returned an error: NotFound. ---> System.ServiceModel.CommunicationException: The remote server returned an error: NotFound. ---> System.Net.WebException: The remote server returned an error: NotFound. ---> System.Net.WebException: The remote server returned an error: NotFound.
   at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
   at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClass5.<EndGetResponse>b__4(Object sendState)
   at System.Net.Browser.AsyncHelper.<>c__DisplayClass2.<BeginOnUI>b__0(Object sendState)
   --- End of inner exception stack trace ---
   at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state)
   at System.Net.Browser.BrowserHttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.CompleteGetResponse(IAsyncResult result)
   --- End of inner exception stack trace ---
   at System.ServiceModel.DomainServices.Client.WebDomainClient`1.EndQueryCore(IAsyncResult asyncResult)
   at System.ServiceModel.DomainServices.Client.DomainClient.EndQuery(IAsyncResult asyncResult)
   at System.ServiceModel.DomainServices.Client.DomainContext.CompleteLoad(IAsyncResult asyncResult)
   --- End of inner exception stack trace ---}

Here's my VB code:

Imports RadControlsSilverlightApp1.Web
Imports System.ServiceModel.DomainServices.Client

Partial Public Class MainPage
    Inherits UserControl


    Public Sub New()
        InitializeComponent()
        Dim context As New WorkForceDomainContext
        Dim operation As LoadOperation = context.Load(context.GetWorkforceSeparationCurrent1Query())
        AddHandler operation.Completed, AddressOf operation_Completed
    End Sub

    Private Sub operation_Completed(ByVal sender As Object, ByVal e As EventArgs)
        Try

        Dim context As New WorkForceDomainContext

        Dim loadOperation As ServiceModel.DomainServices.Client.LoadOperation = TryCast(sender, ServiceModel.DomainServices.Client.LoadOperation)
        If loadOperation.Error Is Nothing Then <<<<< ERROR HERE
            RadGridView1.ItemsSource = _
                From w As WorkforceSeparationCurrent1 In loadOperation.Entities _
                Where w.RetType = "csrs" _
                Select w
            End If
        Catch ex As Exception

        End Try
    End Sub
End Class

[Rossen Hristov]

Hi Justin,

Here is what the exception says: "Load operation failed for query 'GetWorkforceSeparationCurrent1'. The remote server returned an error: NotFound."

This means that the query (i.e. method) with name GetWorkforceSeparationCurrent1 cannot be found on the service class in your server project. 

Does your service class has such a method, because if you were following the tutorial line-by-line your query would be called Employees and not GetWorkforceSeparationCurrent1.

To learn more about WCF RIA Services, please take a look here. There are a lot of video tutorials that will get you started in no time. 

Greetings,
Ross
the Telerik team