private void detach_Categories_Products(Categories_Product entity)
		{
			this.SendPropertyChanging();
			entity.Product = null;
		}
 partial void DeleteCategories_Product(Categories_Product instance);
 partial void InsertCategories_Product(Categories_Product instance);
 partial void UpdateCategories_Product(Categories_Product instance);
		private void attach_Categories_Products(Categories_Product entity)
		{
			this.SendPropertyChanging();
			entity.Category = this;
		}