private void TeacherRadioButton_OnChecked(object sender, RoutedEventArgs e)
{
TeacherOrStudentListViewGridView.Dispatcher.InvokeAsync(() =>
{
TeacherOrStudentListViewGridView.Columns.FirstOrDefault().DisplayMemberBinding =
new Binding("TeacherName");
TeacherOrStudentListViewGridView.Columns.FirstOrDefault().Header = "TeacherName";
TeacherOrStudentListView.ItemsSource =
_server.GetTeacherInGroup(((Group)(GroupListView.SelectedItem)).GroupName).Where(w => w.Groups.Count > 0).ToList();
});
TeacherBorder.Dispatcher.InvokeAsync(() =>
{
TeacherBorder.Background = (Brush) new BrushConverter().ConvertFrom("#D46A00");
});
StudentBorder.Dispatcher.InvokeAsync(() =>
{
StudentBorder.Background = (Brush) new BrushConverter().ConvertFrom("#FFFFCA82");
});
}