Hi,
i have a new terrible problem.
I show in a dialog a ContenURL. 
I placed in that ContenURL a closeButton to close the dialog with:
protected void Save1_Click(object sender, ImageClickEventArgs e)
    {
        EO.Web.Dialog d;
        d = (EO.Web.Dialog) Session["EO_Dialog"]; // i have init a session-var with dialog befor 
        d.Visible = false;
    }
hmm, but the dialog is keeping visible :/
Have you a solution for that problem, please tell me!!!
Thank you!!!
Greetings Torsten