/// <summary>
 /// 輔助傳輸StatusMessage數(shù)據(jù)
 /// </summary>
 [Serializable]
 public sealed class StatusMessageData
 {
  private StatusMessageType messageType;
  /// <summary>
  /// 提示消息類別
  /// </summary>
  public StatusMessageType MessageType
  {
   get { return messageType; }
   set { messageType = value; }
  }

  private string messageContent = string.Empty;
  /// <summary>
  /// 信息內容
  /// </summary>
  public string MessageContent
  {
   get { return messageContent; }
   set { messageContent = value; }
  }

  private object data;

  /// <summary>
  /// 數(shù)據(jù) 
  /// </summary>
  public object Data
  {
   get { return data; }
   set { data = value; }
  }
  /// <summary>
  /// 構造器
  /// </summary>
  /// <param name="messageType">消息類型</param>
  /// <param name="messageContent">消息內容</param>
  public StatusMessageData(StatusMessageType messageType, string messageContent, object data)
  {
   this.messageType = messageType;
   this.messageContent = messageContent;
   this.data = data;
  }
  public StatusMessageData(StatusMessageType messageType, string messageContent)
  {
   this.messageType = messageType;
   this.messageContent = messageContent;
  }
  public StatusMessageData()
  {
  }
 }

 /// <summary>
 /// 提示消息類別
 /// </summary>
 public enum StatusMessageType
 {
  /// <summary>
  /// 成功
  /// </summary>
  Success = 1,

  /// <summary>
  /// 錯誤
  /// </summary>
  Error = -1,

  /// <summary>
  /// 提示信息
  /// </summary>
  Hint = 0,
  /// <summary>
  /// 提醒登錄
  /// </summary>
  Login = 5,
  /// <summary>
  /// 提示重定向
  /// </summary>
  Redirect = 6,
 }

[HttpPost]
  public ActionResult ExportExcel(SearchModel model)
  {
   
   
   StatusMessageData result = new StatusMessageData();
   if (model.Data == null || model.Data.Count <= 0)
   {
    result.MessageType = StatusMessageType.Error;
    result.MessageContent = "沒有要下載的數(shù)據(jù)";
    return Json(result);
   }
   string fileglobal = "";
   //組織Excel表格
   StringBuilder sb = new StringBuilder(400);
   sb.Append("<table cellspacing='0' rules='all' border='1'>");
   sb.Append("<thead>");
   sb.Append("<tr>");
   sb.Append("<th>列一</th>");
   sb.Append("<th>列二</th>");
   sb.Append("<th>列三</th>");
   sb.Append("<th>列四</th>");
   sb.Append("</tr>");
   sb.Append("</thead>");
   sb.Append("<tbody>");
   try
   {
      foreach (var item in model.Data)
      {
       sb.Append("<tr>");
       sb.Append("<td>");
       sb.Append(item.column1);
       sb.Append("</td>");
       sb.Append("<td>");
       sb.Append(item.column2);
       sb.Append("</td>");
       sb.Append("<td>");
       sb.Append(item.column3);
       sb.Append("</td>");
       sb.Append("<td>");
       sb.Append(item.column4);
       sb.Append("</td>");
       sb.Append("</tr>");
       
      }
    }
   
    sb.Append("</tbody>");
    sb.Append("</table>");
    //以UTF8格式寫入文件
    byte[] contentBytes = Encoding.UTF8.GetBytes(sb.ToString());

    string rootDirServerPath = "將生成的文件保存在指定的目錄名稱";
    //由于我們項目上下載Excel文件基本沒有并發(fā)的情況，所以只用年月日時分秒來命名文件就可以避免生成相同文件名文件的問題。
    string fileSaveName = "下載的文件名稱_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls";

    string rootDirServerPhysicPath = Server.MapPath("~" + rootDirServerPath);
    if (!Directory.Exists(rootDirServerPhysicPath))
    {
     Directory.CreateDirectory(rootDirServerPhysicPath);
    }
    string[] strFiles = Directory.GetFiles(rootDirServerPhysicPath);
    if (strFiles.Length > 0)
    {
     foreach (string strFile in strFiles)
     {
      System.IO.File.Delete(strFile);
     }
    }
    //以下是將文件保存到指定目錄
    string userFailedSummaryFileSavePath = rootDirServerPhysicPath + "/" + fileSaveName;
    if (System.IO.File.Exists(userFailedSummaryFileSavePath))
    {
     System.IO.File.Delete(userFailedSummaryFileSavePath);
    }
    System.IO.File.WriteAllBytes(userFailedSummaryFileSavePath, contentBytes);
    //拼裝好要下載文件的全路徑。
    fileglobal = rootDirServerPath + "/" + fileSaveName;
   }
   catch (Exception ex)
   {
    result.MessageType = StatusMessageType.Error;
    result.MessageContent = ex.Message.ToString();
    return Json(result);
   }
   result.MessageType = StatusMessageType.Success;
   result.MessageContent = "正在下載，請稍候...";
   result.Data = fileglobal;
   return Json(result);
  } 

$("#export-excel").click(function (e) {
    e.preventDefault();
    $.post("Controller/ExportExcel.aspx", $("#Form1").serialize(), function (data) {
      art.dialog.tips(data.MessageContent, 1.5, data.MessageType, function () {
        if (data.MessageType == 1) {
          window.open(data.Data);
        } else {
          //錯誤操作
        }
      });
    });
  });