/// <summary>
/// DataGridCourses_UnloadingRow
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DataGridCourses_UnloadingRow(object sender, DataGridRowEventArgs e)
{
Course course = e.Row.Item as Course;
RemoveCouseFromBinding(course);
}
private bool BindingAlreadyExist(Course course, Student student)
{
return(Bindings.FirstOrDefault(b => b.StudentId == student.Id && b.CourseId == course.Id) == null ? false : true);
}