Silverlight / WPF - create child window inside a mainwindow in c# wpf

hi, i am create main window  and add one button that button click to call new window ,that window inside another one button its click provide child window name , the child window name depend on user given name ,, the child widow inside give canvas panel height=100,width=100 . how to use this task is very very urgent please help me....

You mean a modal dialog in Silverlight?

http://www.nullskull.com/a/1349/silverlight-modal-dialog-with-custom-user-controls.aspx

need more examples in wpf

It is XAML.  It works in WPF.

 no i need wpf dynamically create child window inside mainwindow give me more examples..

Use a UserControl.  WPF doesn't have child windows.

check out gaiaware

great stuff

http://samples.gaiaware.net/Extensions/Window/Nested/