How can SynchronizationContext.Current of the main thread become null in a Windows Forms application?

Question

I have a problem in my application: At some point, the SynchronizationContext.Current becomes null for the main thread. I\'m unable to reproduce the same problem in an isola

Answer 1

I've created a class for this. It looks like this:

public class UIContext
{
    private static TaskScheduler m_Current;

    public static TaskScheduler Current
    {
        get { return m_Current; }
        private set { m_Current = value; }
    }

    public static void Initialize()
    {
        if (Current != null)
            return;

        if (SynchronizationContext.Current == null)
            SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());

        Current = TaskScheduler.FromCurrentSynchronizationContext();
    }
}

On startup of my App I call UIContext.Initialize()

And when I need it in a task I just put UIContext.Current as TaskScheduler.

Task.Factory.StartNew(() =>
{
    //Your code here
}, CancellationToken.None, TaskCreationOptions.None, UIContext.Current);