WPF (MVVM): Closing a view from Viewmodel?

Question

Anybody come across a clever way of closing a view in a viewmodel using MVVM?

Maybe there is a way of using binding to signal the view (window) to close?

I w

Answer 1

I used to use the dialogcloser attached behavior, but i find the below solution easier where I can use it. The sample below takes an example of a close button on the window for simplicity.

pass the window as the command parameter.

in the button xaml for the view:

CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=Window}}"

in the command execute method in the view model:

if (parameter is System.Windows.Window)
{
    (parameter as System.Windows.Window).Close();
}