Cross Tread Operations

Well I figured it out:

[code]
 private delegate string GetSelectedItemURLDelegate();
            if (this.PlaylistListbox.InvokeRequired)
            {
                return this.PlaylistListbox.Invoke(new GetSelectedItemURLDelegate(this.GetSelectedItemURL)) as string;
            }
            else
            {
[/code]

Actually i got the question from above to work.  Now I have a different question.
I cannot get a function that returns, to be able to use a delegate correctly.

This code only returns "none" and never the selected item
[CODE]
        private delegate string GetSelectedItemURLDelegate();
        public string GetSelectedItemURL()
        {
            string returnUrl = "none";
            if (this.PlaylistListbox.InvokeRequired)
            {
                this.PlaylistListbox.Invoke(new GetSelectedItemURLDelegate(this.GetSelectedItemURL));
            }
            else
            {
                if (PlaylistListbox.SelectedItem == null)
                {
                    if (PlaylistListbox.Items.Count != 0)
                    {
                        PlaylistListbox.SelectedIndex = 0;
                        returnUrl = PlaylistListbox.SelectedItem.ToString();
                    }
                }
                else
                {
                    returnUrl = PlaylistListbox.SelectedItem.ToString();
                }
            }
            return returnUrl;
        }
[/CODE]