title: WPF: How can I pass the text of textbox in a thread to the main window?
body: <p>There is a child textbox control in an chlid window form created by main window form using thread technology, and I wanna implement this function: In the child window form, when I click a button (or Enter-key-down), it pass the text to the main window form. What can I do about that?</p>