private async void comboboxTeacherName_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
TeacherName = comboBoxTeacherName.Items[comboBoxTeacherName.SelectedIndex].ToString();
}
catch { }
await Task.Factory.StartNew(() =>
{
InvokeUI(() =>
{
var listDiscipline = WorkWithDB.GetAllDisciplineForTeacher(TeacherName).ToList();
if (listDiscipline != null)
{
AddItemToComboBox(comboBoxListDiscipline, listDiscipline);
}
listDiscipline.Clear();
});
});
}