Accessing UI controls in Task.Run with async/await on WinForms

Question

I have the following code in a WinForms application with one button and one label:

using System;
using System.IO;
using System.Threading.Tasks;
using System.         


        

Answer 1

Because it's on a different thread and cross-thread calls aren't allowed.

You will need to pass on the "context" to the thread you are starting. See an example here: http://reedcopsey.com/2009/11/17/synchronizing-net-4-tasks-with-the-ui-thread/