//Тут ще не докінця дороблено, і саме тут виникає ця помилка яку я не можу знайти private void DetailsButton_Click(object sender, RoutedEventArgs e) { if (GroupsComboBox.SelectedItem != null) { DetailsGrid.Visibility = Visibility.Visible; DTOGroup group = groups.FirstOrDefault(g => g.GroupName == GroupsComboBox.Text); List <DTOStudent> students = client.GetGroupStudents(group.StudentsId.ToList <int>()); List <DTOTest> tests = client.GetGroupTests(group.TestsId.ToList <int>()); studentsList.ItemsSource = students; testsList.ItemsSource = tests; } else { MessageBox.Show("Please select group!"); } }
public void SetListOfTest() { tests = client.GetGroupTests(dtoGroup.TestsId.ToList()); if (tests.Count != 0) { foreach (var t in tests) { string theme = themes.FirstOrDefault(f => f.Id == t.ThemeId).ThemeName; TestViewModel testV = new TestViewModel() { TestId = t.TestId, TestName = t.TestName, MixQuestionsOrder = t.MixQuestionsOrder, MixAnswersOrder = t.MixAnswersOrder, TestTime = t.TestTime, ThemeId = t.ThemeId, ThemeName = theme }; testsV.Add(testV); } testOfGroupGrid.ItemsSource = testsV; } }