TwitterResponse causes hang on Silverlight

Question

Whenever I try and make any Twitter request, my application always hangs. This does not apply to the oAuthUtility though, I have successfully authorized the user to use my application, but whenever I make a request it just hangs. Here is one of the requests I am making that hangs:

        Dim response As TwitterResponse(Of TwitterStatus) = TwitterStatus.Update(myFire_tokens.Tokens, TextBox1.Text)
    If response.Result <> RequestResult.Success Then
        MessageBox.Show(response.ErrorMessage, "Error", MessageBoxButton.OK)
    Else
        MessageBox.Show("Tweet Sent", "Awesome!", MessageBoxButton.OK)
    End If

This hang occurs on Version 2.4, and releases: 504, 516, and 523. On Silverlight 5 and 4. The problem I belive lies with TwitterResponse because the method does get called (For example if I ran the above code, the tweet would post) because I can see a OK response in Fiddler.

No exceptions are thrown in the debugger, the application just hangs.

Answer 1

You should link against the SilverlightAsync project.

If you are on the Silverlight-side, it would have used this signature:

public static IAsyncResult Update(
    OAuthTokens tokens, 
    string text, 
    StatusUpdateOptions options, 
    TimeSpan timeout, 
    Action<TwitterAsyncResponse<TwitterStatus>> function)

notice the additional two parameters?

Your code should look something like this

TwitterStatus.Update(
    myFire_tokens.Tokens, 
    TextBox1.Text, 
    Nothing, 
    0,
    Sub (response As TwitterAsyncResponse<TwitterStatus>)
        If response.Result <> RequestResult.Success Then
            MessageBox.Show(response.ErrorMessage, "Error", MessageBoxButton.OK)
        Else
            MessageBox.Show("Tweet Sent", "Awesome!", MessageBoxButton.OK)
        End If
    End Sub)