What's wrong with my cross-thread call in Windows Forms?

Question

I encounter a problem with a Windows Forms application.

A form must be displayed from another thread. So in the form class, I have the following code:

Answer 1

You could always try testing against a different control.

For example, you could access Application.Forms collections

public Control GetControlToInvokeAgainst()
{
    if(Application.Forms.Count > 0)
    {
        return Application.Forms[0];
    }
    return null;
}

Then in your DisplayDialog() method, call the GetControlToInvokeAgainst() and test for null before trying to perform an invokerequired call.