/// <summary> /// /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void DeleteEducationalLevel_Click(object sender, RoutedEventArgs e) { _contentManager.DeleteEducationalLevel(_educationalLevelDictionary[_selectedEducationalLevel.Name], _courseImagesCache[_selectedLanguage.Name]); _educationalLevelDictionary.Remove(_selectedEducationalLevel.Name); WrapPanelEducationaLevel.Children.Remove(_selectedEducationalLevel); _selectedEducationalLevel = null; WrapPanelGrades.Children.Clear(); NoOfFiles.Text = ""; NoOfLessons.Text = ""; NoOfWeeks.Text = ""; EditEducationalLevel.IsEnabled = false; DeleteEducationalLevel.IsEnabled = false; AddGrade.IsEnabled = false; EditGrade.IsEnabled = false; DeleteGrade.IsEnabled = false; EditWeeks.IsEnabled = false; EditLessons.IsEnabled = false; EditFiles.IsEnabled = false; }