/// <summary>
 /// 复制
 /// </summary>
 public void Clone(Photo entity)
 {
     this.PhotoID = entity.PhotoID;
         this.UploadTime = entity.UploadTime;
         this.PhotoName = entity.PhotoName;
         this.Description = entity.Description;
         this.PUserID = entity.PUserID;
 }
 /// <summary>
 /// 用于向 Photos EntitySet 添加新对象的方法,已弃用。请考虑改用关联的 ObjectSet&lt;T&gt; 属性的 .Add 方法。
 /// </summary>
 public void AddToPhotos(Photo photo)
 {
     base.AddObject("Photos", photo);
 }
 /// <summary>
 /// 创建新的 Photo 对象。
 /// </summary>
 /// <param name="photoID">PhotoID 属性的初始值。</param>
 public static Photo CreatePhoto(global::System.Int32 photoID)
 {
     Photo photo = new Photo();
     photo.PhotoID = photoID;
     return photo;
 }