/// <summary>
    /// 扩展时间接口，可以返回整形数值
    /// </summary>
    /// <param name="time"></param>
    /// <returns></returns>
    public static int DateTimeToInt(this DateTime time)
    {
      System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
      return (int)(time - startTime).TotalSeconds;
    }

/// <summary>
    /// 更新向上或者向下的顺序
    /// </summary>
    /// <param name="id">记录的ID</param>
    /// <param name="moveUp">往上，还是往下移动，往上则为true</param>
    /// <returns></returns>
    public bool UpDown(string id, bool moveUp)

/// <summary>
/// 更新向上或者向下的顺序
/// </summary>
/// <param name="id">记录的ID</param>
/// <param name="moveUp">往上，还是往下移动，往上则为true</param>
/// <returns></returns>
public bool UpDown(string id, bool moveUp)
{
  //设置排序的规则
  bool IsDescending = true;
  bool result = false;
  WebFavoriteInfo info = FindByID(id);
  if (info != null)
  {
    //构建查询的条件
    string condition = "";
    if (IsDescending)
    {
      condition = string.Format("Seq {0} {1}", moveUp ? ">" : "<", info.Seq);
    }
    else
    {
      condition = string.Format("Seq {0} {1}", moveUp ? "<" : ">", info.Seq);
    }
    var list = baseDal.Find(condition);
    decimal newSeq = 0M;
    switch (list.Count)
    {
      case 0:
        newSeq = info.Seq;//已在顶部或者底部，顺序默认不变
        break;
      case 1:
        //上面或者下面有一个记录
        if (IsDescending)
        {
          newSeq = moveUp ? (list[0].Seq + 1M) : (list[0].Seq - 1M);
        }
        else
        {
          newSeq = !moveUp ? (list[0].Seq + 1M) : (list[0].Seq - 1M);
        }
        break;
      case 2:
        //中间区域,取平均值
        newSeq = (list[0].Seq + list[1].Seq) / 2M;
        break;
      default:
        //多于两个的情况
        if (moveUp)
        {
          newSeq = (list[list.Count - 2].Seq + list[list.Count - 1].Seq) / 2M;
        }
        else
        {
          newSeq = (list[0].Seq + list[1].Seq) / 2M;
        }
        break;
    }
    //统一修改顺序
    info.Seq = newSeq;
    result = Update(info, info.ID);
  }
  return result;
}

/// <summary>
/// 移动记录
/// </summary>
/// <param name="id">记录ID</param>
/// <param name="up">向上为true，否则为false</param>
/// <returns></returns>
[HttpPost]
public ActionResult UpDown(string id, bool up)
{
  CommonResult result = new CommonResult();
  if(!string.IsNullOrEmpty(id))
  {
    try
    {
      result.Success = BLLFactory<WebFavorite>.Instance.UpDown(id, up);
    }
    catch(Exception ex)
    {
      result.ErrorMessage = ex.Message;
    }
  }
  return ToJsonContent(result);
}

$("#grid_body").html("");
$.each(data.rows, function (i, item) {
  var tr = "<tr>";
  tr += "<td><a class='btn btn-sm blue' href='" + item.Url + "'>" + item.Title + "</a></td>";
  tr += "<td>";
  tr += "<a href='javascript:;' class='btn btn-sm green' onclick=\"Up('" + item.ID + "')\" title='向上移动'><span class='glyphicon glyphicon-arrow-up icon-state-danger'></span></a>";
  tr += "<a href='javascript:;' class='btn btn-sm blue' onclick=\"Down('" + item.ID + "')\" title='向下移动'><span class='glyphicon glyphicon-arrow-down'></span></a>";
  tr += "</td>";
  tr += "</tr>";
  $("#grid_body").append(tr);
});

var UpDownUrl = "/WebFavorite/UpDown"
function Up(id) {
  var postData = { id: id, up: true };
  $.post(UpDownUrl, postData, function (json) {
    var data = $.parseJSON(json);
    if (data.Success) {
      showTips("向上移动成功");
      Refresh();//刷新页面数据
    }
    else {
      showTips(data.ErrorMessage);
    }
  });
}
function Down(id) {
  var postData = { id: id, up: false };
  $.post(UpDownUrl, postData, function (json) {
    var data = $.parseJSON(json);
    if (data.Success) {
      showTips("向下移动成功");
      Refresh();//刷新页面数据
    }
    else {
      showTips(data.ErrorMessage);
    }
  });
}