Xamarin表单-WCF完成的事件未更改组件

Question

Currently i'm working on a Xamarin.Forms application with WCF. The app makes a connection to the WCF host and I get a response back, only I can't do anything with the results of the response.

My code of the method that's supposed to take care of the response is:

private static void ClientOnGetHelloDataCompleted(object sender, GetHelloDataCompletedEventsArgs getHelloDataCompletedEventArgs)
{
string msg = null;

if(getHelloDataCompletedEventArgs.Error != null)
   {
      msg = getHelloDataCompletedEventArgs.Error.Message;
   }
   else if(getHelloDataCompletedEventArgs.Cancelled != null)
   {
      msg = "Request was cancelled";
   }
   else
   {
      lblText.Text = getHelloDataCompletedEventArgs.Results.Name;
   }
}

When I debug I can see Results.Name is filled, but for some reason it doesn't update the label named lblText.

This method is placed in de App.cs (Xamarin Forms portable project).

Anyone here that can help me with this problem?

Answer 1

you should refresh the UI in the main thread, here is the fix

  else
  {  
         InvokeOnMainThread(() =>   lblText.Text =   getHelloDataCompletedEventArgs.Results.Name);

   }