How to make a WPF window be on top of all other windows of my app (not system wide)?

Question

I want my window to be on top of all other windows in my application only. If I set the TopMost property of a window, it becomes on top of all windows of all applications and I don't want that.

Answer 1

You need to set the owner property of the window.

You can show a window via showdialog in order to block your main window, or you can show it normal and have it ontop of the owner without blocking the owner.

here is a codeexample of the codebehind part - I left out all obvious stuff:

namespace StackoverflowExample {   public partial class MainWindow : Window   {     public MainWindow()     {       InitializeComponent();     }     void NewWindowAsDialog(object sender, RoutedEventArgs e)     {       Window myOwnedDialog = new Window();       myOwnedDialog.Owner = this;       myOwnedDialog.ShowDialog();     }     void NormalNewWindow(object sender, RoutedEventArgs e)     {       Window myOwnedWindow = new Window();       myOwnedWindow.Owner = this;       myOwnedWindow.Show();     }   } }