Question

So, the documentation that I’ve found online so far regarding the Invoke property doesn’t seem to be particularly good, which is actually kind of annoying, believe it or not. I understand what Invoke does – you can’t safely access the GUI directly, so an invoke does it in a safe way. That’s fine, but I don’t understand the variables that go into the method. If I wanted to, for instance, remove text from a listbox, how would I do that? I get about this far before I get a bit lost.

private void DoStuff(string TextIWouldBeRemoving)
{        

if (listboxname.InvokeRequired)
    {
        listboxname.Invoke(SomeMysteriousParamaters, new object[] { TextIWouldBeRemoving )};   
    }
}

Answer 1

The first parameter is the method you want to safely invoke, the second parameter is an object array of the arguments to that method

So you would write:

private void DoStuff(string TextIWouldBeRemoving)
{        
    if (listboxname.InvokeRequired)
    {
        listboxname.Invoke(DoStuff, new object[] { TextIWouldBeRemoving )};   
    }
    else
    {
        // Actually remove the text here!
    }
}