Hi,
I want to develop a simple, instant messenger like- application where there's a main windows with nicknames and pop-up chat window when you click the nickname in C#. I can create a click event to instantiate a new chat window form, but I don't know how to manipulate the chat window forms so I can have only one chat window with each nickname and transfer data between main window and the chat window. Any suggestions will be appreciated.

Sounds like you need and SDI architecture. Have a peak at these links they should help you.

http://msdn2.microsoft.com/en-us/library/ms996475.aspx

http://msdn2.microsoft.com/en-us/library/ms996478.aspx

hths,

James

Sounds like you need and SDI architecture. Have a peak at these links they should help you.

http://msdn2.microsoft.com/en-us/library/ms996475.aspx

http://msdn2.microsoft.com/en-us/library/ms996478.aspx

hths,

James

Thanks for the help. I've managed somehow to check previous instances of the child chat form by using the OwnedForms property of the main form. As for the data passing, I just used simple public variables. Thanks again for these articles.