How to center a WPF app on screen

Question

I want to center my WPF app on startup on the primary screen  I know I have to set myWindow Left and myWindow Top  but where do I get the values   I found System Windows Forms Screen PrimaryScreen  which is apparently not WPF  Is there a WPF alternative that gives me the screen resolution or something like that

User · Answer

You can still use the Screen class from a WPF app. You just need to reference the System.Windows.Forms assembly from your application. Once you've done that, (and referenced System.Drawing for the example below):

Rectangle workingArea = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea;

...works just fine.

Have you considered setting your main window property WindowStartupLocation to CenterScreen?

User · Answer

What about the SystemParameters class in PresentationFramework  It has a WorkArea property that seems to be what you are looking for   But  why won t setting the Window WindowStartupLocation work  CenterScreen is one of the enum values  Do you have to tweak the centering

User · Answer

I prefer to put it in the WPF code   In  WindowName  xaml file    lt Window x Class         WindowStartupLocation   CenterScreen  gt

User · Answer

You don t need to reference the System Windows Forms assembly from your application  Instead  you can use System Windows SystemParameters WorkArea  This is equivalent to the System Windows Forms Screen PrimaryScreen WorkingArea

User · Answer

var window   new MyWindow      for center of the screen use   window WindowStartupLocation   System Windows WindowStartupLocation CenterScreen    for center of the parent window use   window WindowStartupLocation   System Windows WindowStartupLocation CenterOwner

User · Answer

There is no WPF equivalent  System Windows Forms Screen is still part of the  NET framework and can be used from WPF though   See this question for more details  but you can use the calls relating to screens by using the WindowInteropHelper class to wrap your WPF control

User · Answer

xaml  lt Window     WindowStartupLocation  quot CenterScreen quot  gt

User · Answer

Put this in your window constructor  WindowStartupLocation   System Windows WindowStartupLocation CenterScreen        NET FrameworkSupported in  4  3 5    3 0       NET Framework Client ProfileSupported   in  4  3 5 SP1

[c#] How to center a WPF app on screen?

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