//Run OnClosing in IClosing implementing ViewModels
private void MicroscopeView_Closing(object sender, CancelEventArgs e)
{
IClosing context = DataContext as IClosing;
if (context != null)
{
e.Cancel = !context.OnClosing();
}
}
void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
IClosing context = DataContext as IClosing;
context.OnClosing();
}