Creating a custom Close Button in WPF

Question

I need to implement a custom window decorator where a Close button will behave exactly as the close or x button on all Windows applications.

Answer 1

Simply call the close() function from your button:

WPF:

<Button Name="CloseButton" Content="x" Click="CloseButton_Click" />

code-behind:

private void CloseButton_Click(object sender, RoutedEventArgs e)
{
    Close();
}

Answer 2

If you would like to use MVVM architecture, then you can pass the name of your window as a Command Parameter and in the Command you can close the window.

The code would be something like this:

Button Command="{Binding MainCloseButtonCommand}"
CommandParameter="{Binding ElementName=mainWindow}"

private void performMainCloseButtonCommand(object Parameter)
{
    Window objWindow  = Parameter as Window;
    objWindow.Close();
}