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c#wpfxamlwindowmultiple-monitors
Mehrad
Mehrad

Reputation: 4203

How to make a dialog(view) open up on the same monitor as the main window

In a PC with multiple monitors, say you run your application which have have a second Window/Dialog other than the main window (such as Options) that you want it to open in the same screen/monitor as your MainWindow. How to force this behavior?

You basically want to stop the scenario that your MainWindow is on one monitor and when you bring up the "Options" page, it shows on a different screen/monitor.

Upvotes: 7

Views: 9737

Answers (3)

Jack
Jack

Reputation: 526

If you want the dialog to open on the same output screen as the parent form you need to set the StartPosition 

ChildDialog cd = new ChildDialog() { StartPosition = FormStartPosition.CenterParent };
cd.ShowDialog();

Upvotes: 0

CaptainCodeman
CaptainCodeman

Reputation: 2221

I'd like to add to this the fact that if you start the second dialog maximized, it will default to the main screen. As a workaround, I set the maximize flag in the OnLoad method.

Upvotes: 1

learningcs
learningcs

Reputation: 1926

Have you looked at the WindowStartupLocation property for Window?

CenterScreen places the Window in the center of the screen containing the cursor, which should normally be fine. For example, if a user clicks a button on your Window and a dialog opens, the cursor will still be over the button and thus the dialog will show up in the center of the same Window.

CenterOwner places the Dialog in the center of the Window specified as it's owner. Declare the new Window similar to this:

MyDialog d = new MyDialog { Owner = parentWindow };
d.ShowDialog();

Upvotes: 9

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