void dgWebPages_RowDoubleClick(object sender, MouseButtonEventArgs e)
{
dgWebPages.CancelEdit();
// https://stackoverflow.com/questions/16236905/access-parent-window-from-user-control
var dlg = new PatternsWebPagesDetailDlg(Window.GetWindow(this), vmWP, (MPatternWebPage)((DataGridRow)sender).Item);
dlg.ShowDialog();
}
void btnAddWebPage_Click(object sender, RoutedEventArgs e)
{
var dlg = new PatternsWebPagesDetailDlg(Window.GetWindow(this), vmWP, vmWP.NewPatternWebPage());
dlg.ShowDialog();
}