I started a thread to open a network connection to a server. If there is an error opening the connection, I want the thread to show a form telling the user to check to see if the server is running, then I put the thread to sleep for five seconds and loop back and try again. When I tried this the form showed, but the label with the message on it is just a blank white box and if I hover the cursor over the form it shows as an hourglass. So I'm wondering if it is it possible to do this or can you only show forms on the UI thread?