partial void DeleteSCategory(SCategory instance);
 partial void UpdateSCategory(SCategory instance);
		private void detach_SCategories(SCategory entity)
		{
			this.SendPropertyChanging();
			entity.XCategory = null;
		}
 partial void InsertSCategory(SCategory instance);
		private void attach_SCategories(SCategory entity)
		{
			this.SendPropertyChanging();
			entity.XCategory = this;
		}