后台提交页面后无法获取返回数据求解!烦请过去帮忙看下可否?

Question

因此处无法将代码粘全,故放在我的BLOG里了,烦请过去帮忙看下可否?
http://blog.csdn.net/anyqu/archive/2008/05/16/2451905.aspx

Answer 1

.xls文件格式？
提示你打不开？

Answer 2

可能是忘记在Page_Load中加入IsPostBack判断了吧

Answer 3

我这里有个类,你可以直接使用,试一下可以不.我是用来下载文件的一个类.,要是好用的话~~给分哦~呵呵 /// <summary>
    /// 类名：CContentSave
    /// 类功能：实现文件的下载过程
    /// 
    /// </summary>
   public class CContentSave
    {
       private String path;                         // 存储文件名及保存的路径
       private System.Net.HttpWebResponse response; // 用于从服务器接收数据流的回应
       /// <summary>
       /// 名称:CContentSave
       ///  功能:构造函数
       /// </summary>
       /// <param name="filePath">文件保存路径包括文件名及扩展名</param>
       /// <param name="response">请求下载文件后返回的回应</param>
       public CContentSave(string filePath,System.Net.HttpWebResponse response)
       {
           this.response = response;
           this.path = filePath;
       }
/// <summary>
/// 名称:DownloadProcess
/// 功能:下载文件
/// </summary>
/// <returns>0:下载失败;1:下载成功;2:用户取消</returns>
       public int DownloadProcess()
       {
           if (this.response.StatusCode == System.Net.HttpStatusCode.OK)
           {
               // FrmProgressLA frmProcess = new FrmProgressLA(this.path);
               long length = this.response.ContentLength;
               try
               {                                     System.IO.FileStream file = new System.IO.FileStream(this.path, System.IO.FileMode.Append
                                                                        , System.IO.FileAccess.Write,
                                                                        System.IO.FileShare.Write);
                   System.IO.Stream strm = this.response.GetResponseStream();
               //    frmProcess.Show();
                   long nowlength = 0;
                   // 开始保存数据流,每次读取4096个字节
                   int readlenth=0;
                   byte[] buffer = new byte[4096];
                   readlenth=strm.Read(buffer,0,4096);
                   while (readlenth>0)
                   {
                        file.Write(buffer, 0, readlenth);
                       readlenth = strm.Read(buffer, 0, buffer.Length);
                       
                       // 此处添加调用设置下载界面的代码                          }
                   // 此处添加 文件下载完毕,关闭下载界面的代码                                   file.Close();
                   return 1;
               }
               catch (Exception e)
               {
                   System.Windows.Forms.MessageBox.Show(e.Message);
                 // 下载失败                   
                   return 0;
               }
           }
           // 下载失败
           return 0;
       }
    }