Question

how to make something like this:(Screen is not from my app)


When is change the button in dialogBox, it automatically change the Bitmap in MainWindow…
I hope you understand my prob ;d
So how can i make this dialog window ?
Or how can i get access to Mainwindow variables from dialogWindow?

Answer 1

If you have no architecture to support that (like MVVM), you can simply use the Application object in you dialog code-behind:

MainWindow mainWindow = Application.Current.MainWindow as MainWindow;
mainWindow.button1.Content = "Dialog rename me";

Application object is set on your application execution and is global.