Hi, I have main window in my application and modal window, which are trigered by pressing button. I use ShowModal() method to show modal window and Close() method to close this window. It is working fine for first time I use, but when I hit button second time or more to show modal window it returning error -"window already visible". It seems I am doing something wrong Closing this window, but I really have no idea what exactly. Could you help me (again :) )