private void detach_ProductProductPhotos(ProductProductPhoto entity)
		{
			this.SendPropertyChanging();
			entity.ProductPhoto = null;
		}
		private void attach_ProductProductPhotos(ProductProductPhoto entity)
		{
			this.SendPropertyChanging();
			entity.ProductPhoto = this;
		}
 partial void UpdateProductProductPhoto(ProductProductPhoto instance);
 partial void DeleteProductProductPhoto(ProductProductPhoto instance);
 partial void InsertProductProductPhoto(ProductProductPhoto instance);