private void AddNewOperationButton_Click(object sender, RoutedEventArgs e) { if (NewOperationNameTextBox.Text.Trim() == string.Empty) { return; } _cc.AddWorkOperation(Convert.ToInt32(WorkSubsectionsListBox.SelectedValue), Convert.ToInt32(SubsectionsGroupsProp3ComboBox.SelectedValue), NewOperationNameTextBox.Text); NewOperationNameTextBox.Text = string.Empty; AddNewOperationGrid.Visibility = Visibility.Hidden; AdministrationClass.AddNewAction(27); }