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In a C# application, how can I find out if a WPF window is in the primary monitor or another monitor?
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When a Window is created at run-time using the Window object, it is not visible by default. To make it visible, we can use Show or ShowDialog method. Show method of Window class is responsible for displaying a window.
In WPF there is a collection of the open Windows in the Application class, you could make a helper method to check if the window is open. Here is an example that will check if any Window of a certain Type or if a Window with a certain name is open, or both. Show activity on this post. Show activity on this post.
Just set the WindowState to Maximized , and the WindowStyle to None . Also setting the Window as topmost will make sure no other Window shows up over your window.
If the window is maximized then you cannot rely on window.Left or window.Top at all since they may be the coordinates before it was maximized. But you can do this in all cases:
var screen = System.Windows.Forms.Screen.FromHandle( new System.Windows.Interop.WindowInteropHelper(window).Handle); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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