Programming - C# .NET delegates and interacting with forms on seperate threads

O.K, so you have 2 forms instantiated in a Windows Form Application, and you want to control the contents of 1 form from another, but this is impossible because GUIs run on seperate threads, and thread instances are not thread safe. So here is a new design mattern to help you control 1 form instance from within another form.

//define the delegate

public delegate showwindow();

//the accessible method we want to control

public

voidshowthiswindow()

{

this

.TopMost = true;

this

.Focus();

this

.BringToFront();

this

.TopMost = false;

//this.Show();

}

//this is the facade, it hides the fact you are being handled by a BeginInvoke handle

public

voidreShowWindow()

{

(this.InvokeRequired)

{

// Execute the same method, but this time on the GUI thread

this

.BeginInvoke(newshowwindow(showthiswindow));

// we return immedeately

return

;

}

showthiswindow();

}

and

So there you go folks, control GUI elements from seperate forms isn't as hard as you thought. Is it?