Window WPF location on a MainWindow image location?

Window WPF location on a MainWindow image location? - Continued #2

C# wpf --- This is a "continuation" of c-sharpcorner.com/forums/code-for-placing-a-dialog-box-on-top-of-a-mainwindow-image-location.

When I run a program (.exe) a MainWindow image appears centered the screen (WindowStartupLocation="CenterScreen"). With a mouse, I drag MainWindow image to a different location on the screen.

Then I click a button to open a dialog box (Windows WPF -> xaml file and xaml.cs file). That dialog box also appears on the middle of the screen (WindowStartupLocation="CenterScreen").

What code is needed so the dialog box is placed on top of the new MainWindow image location?

To achieve this behavior, you need to set the WindowStartupLocation property of the dialog window to WindowStartupLocation.CenterOwner and specify the owner window when you show the dialog. Here's how you can do it in your WPF application:

Set the WindowStartupLocation property of the dialog window to WindowStartupLocation.CenterOwner in the XAML or code-behind.

In the code-behind of your MainWindow where you open the dialog, set the Owner property of the dialog window to the instance of the MainWindow.

private void OpenDialogButton_Click(object sender, RoutedEventArgs e)
{
    YourDialogWindow dialog = new YourDialogWindow();
    dialog.Owner = this; // 'this' refers to the instance of your MainWindow
    dialog.ShowDialog();
}

With this setup, when you open the dialog window, it will be centered with respect to its owner window, which is your MainWindow. Therefore, it will appear on top of the new location of the MainWindow image.

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Ashutosh Singh2y ago
Accepted answer
To achieve this behavior, you need to set the WindowStartupLocation property of the dialog window to WindowStartupLocation.CenterOwner and specify the owner window when you show the dialog. Here's how you can do it in your WPF application:
1. Set the WindowStartupLocation property of the dialog window to WindowStartupLocation.CenterOwner in the XAML or code-behind.
```
    
```
1. In the code-behind of your MainWindow where you open the dialog, set the Owner property of the dialog window to the instance of the MainWindow.
```
private void OpenDialogButton_Click(object sender, RoutedEventArgs e)
{
    YourDialogWindow dialog = new YourDialogWindow();
    dialog.Owner = this; // 'this' refers to the instance of your MainWindow
    dialog.ShowDialog();
}
```
With this setup, when you open the dialog window, it will be centered with respect to its owner window, which is your MainWindow. Therefore, it will appear on top of the new location of the MainWindow image.