partial void UpdateStudGrup(StudGrup instance);
 partial void InsertStudGrup(StudGrup instance);
		private void detach_StudGrup(StudGrup entity)
		{
			this.SendPropertyChanging();
			entity.Zach = null;
		}
		private void attach_StudGrup(StudGrup entity)
		{
			this.SendPropertyChanging();
			entity.Zach = this;
		}
		private void detach_StudGrup1(StudGrup entity)
		{
			this.SendPropertyChanging();
			entity.Pricina1 = null;
		}
 partial void DeleteStudGrup(StudGrup instance);