private void detach_FileToCategories(FileToCategory entity)
		{
			this.SendPropertyChanging();
			entity.Category = null;
		}
 partial void DeleteFileToCategory(FileToCategory instance);
 partial void InsertFileToCategory(FileToCategory instance);
 partial void UpdateFileToCategory(FileToCategory instance);
		private void attach_FileToCategories(FileToCategory entity)
		{
			this.SendPropertyChanging();
			entity.filesTable = this;
		}