Wpf start in primary screen

Question

If user has multiple screens,

how can I start application in primary screen or chosen screen at start up

Answer 1

This is my borderless window implementation. You should be able to interpret this if you need any differences. I make the window 1/2 the size of my primary monitor then center it. Make sure WindowStartupLocation is set to Manual.

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    Width = SystemParameters.PrimaryScreenWidth / 2;
    Height = SystemParameters.PrimaryScreenHeight / 2;
    Left = (SystemParameters.PrimaryScreenWidth - Width) / 2;
    Top = (SystemParameters.PrimaryScreenHeight - Height) / 2;
}