private void detach_CourseGrades(CourseGrade entity)
		{
			this.SendPropertyChanging();
			entity.Person = null;
		}
 partial void UpdateCourseGrade(CourseGrade instance);
 partial void DeleteCourseGrade(CourseGrade instance);
		private void attach_CourseGrades(CourseGrade entity)
		{
			this.SendPropertyChanging();
			entity.Course = this;
		}
 partial void InsertCourseGrade(CourseGrade instance);
 private void detach_CourseGrades(CourseGrade entity)
 {
     this.SendPropertyChanging();
     entity.Person = null;
 }
 partial void DeleteCourseGrade(CourseGrade instance);
 partial void UpdateCourseGrade(CourseGrade instance);
 partial void InsertCourseGrade(CourseGrade instance);
 private void attach_CourseGrades(CourseGrade entity)
 {
     this.SendPropertyChanging();
     entity.Course = this;
 }