public void DeleteTeacherItem(Teacher teacherForDelete)
{
// Remove the to-do item from the "all" observable collection.
AllTeacherItems.Remove(teacherForDelete);
// Remove the to-do item from the data context.
studentusDB.TeacherItems.DeleteOnSubmit(teacherForDelete);
// Save changes to the database.
studentusDB.SubmitChanges();
}
public void AddTeacher(Teacher newTeacherItem)
{
studentusDB.TeacherItems.InsertOnSubmit(newTeacherItem);
AllTeacherItems.Add(newTeacherItem);
studentusDB.SubmitChanges();
}