“Cross-thread operation not valid” exception on inner controls

Question

I\'ve been struggling with this for quite a while: I have a function designed to add control to a panel with cross-thread handling, the problem is that though the panel and

Answer 1

As an aside - to save yourself having to create countless delegate types:

if (panel.InvokeRequired)
{
    panel.Invoke((MethodInvoker) delegate { AddControlToPanel(panel,ctrl); } );
    return;
}

Additionally, this now does regular static checks on the inner call to AddControlToPanel, so you can't get it wrong.