private void btn_openlog_s_Click(object sender, RoutedEventArgs e) { RecObj obj = ((FrameworkElement)sender).DataContext as RecObj; winCustom wincustom = new winCustom(); Log_UC log_uc = new Log_UC(); log_uc.Log = obj.GetLog(); log_uc.CloseDialog += new ucCustom.CloseDialogHandler(UserControl_CloseDialog); wincustom.winContent = log_uc; wincustom.Title = "Log"; wincustom.Topmost = true; wincustom.ShowInTaskbar = false; wincustom.ShowDialog(); }