private void detach_Coursecomponents(Coursecomponent entity)
 {
     this.SendPropertyChanging("Coursecomponents");
     entity.Component = null;
 }
 partial void DeleteCoursecomponent(Coursecomponent instance);
 partial void InsertCoursecomponent(Coursecomponent instance);
 partial void UpdateCoursecomponent(Coursecomponent instance);
 private void attach_Coursecomponents(Coursecomponent entity)
 {
     this.SendPropertyChanging("Coursecomponents");
     entity.Course = this;
 }