Datagrid 导入到EXcel乱码的朋友,这里绝对解决

最新推荐文章于 2023-09-13 10:56:09 发布

mathew3625

最新推荐文章于 2023-09-13 10:56:09 发布

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分类专栏： vs.net 2003 C# Vs.net 2005 文章标签： datagrid excel string byte object 服务器

本文链接：https://blog.youkuaiyun.com/mathew3625/article/details/1885359

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本文介绍了一种解决从Web应用导出Excel文件时出现乱码的方法。通过调整编码设置，并采用BIG5编码，成功解决了部分用户反馈的乱码问题。

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今天怎么有客户反应导出的excel的乱码,??!!我记得我测试过的啊,后来我用服务器上的再测了下,确实有的会乱码有的却不会,真是奇怪,后来改它的编码utf-8 big5 都试了,就是不行,网上找了一个遇到同样问题的朋友的解决方案,确实可行!!不错,谢谢

被注释的是我之前用的,不好的方法,

private void BtnPushExcel_Click(object sender, System.EventArgs e)

{

string fileName = "Excel.xls";

Export(this.DataGrid1,fileName);

// HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename="+HttpUtility.UrlEncode(fileName,System.Text.Encoding.UTF8));

// HttpContext.Current.Response.Charset ="UTF-8";

// //HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.GetEncoding("BIG5");

// HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.GetEncoding("BIG5");

// HttpContext.Current.Response.ContentType ="application/ms-excel";

// Datagrid2.Page.EnableViewState =false;

// System.IO.StringWriter tw = new System.IO.StringWriter() ;

// System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter (tw);

// this.DataGrid1.RenderControl(hw);

// HttpContext.Current.Response.Write(tw.ToString());

// HttpContext.Current.Response.End();

}

private   void   Export(System.Web.UI.WebControls.DataGrid   dg,string   fileName)
                  {

                          System.Web.HttpResponse   httpResponse   =   Page.Response;
                          httpResponse.AppendHeader("Content-Disposition","attachment;filename="+HttpUtility.UrlEncode(fileName,System.Text.Encoding.UTF8));
                          httpResponse.ContentEncoding=System.Text.Encoding.GetEncoding("BIG5");
                          httpResponse.ContentType   ="application/ms-excel";
                          System.IO.StringWriter     tw   =   new   System.IO.StringWriter()   ;
                          System.Web.UI.HtmlTextWriter   hw   =   new   System.Web.UI.HtmlTextWriter   (tw);
                          dg.RenderControl(hw);
                          string   filePath   =   Server.MapPath("..")+fileName;
                          System.IO.StreamWriter   sw   =   System.IO.File.CreateText(filePath);
                          sw.Write(tw.ToString());
                          sw.Close();

                          DownFile(httpResponse,fileName,filePath);
                          httpResponse.End();
                  }

                  private     bool   DownFile(System.Web.HttpResponse   Response,string   fileName,string   fullPath)
                  {
                          try
                          {
                                  Response.ContentType   =   "application/octet-stream";

                                  Response.AppendHeader("Content-Disposition","attachment;filename="   +
                                          HttpUtility.UrlEncode(fileName,System.Text.Encoding.UTF8)   +   ";charset=BIG5");
                                  System.IO.FileStream   fs=   System.IO.File.OpenRead(fullPath);
                                  long   fLen=fs.Length;
                                  int   size=102400;//每100K同时下载数据
                                  byte[]   readData   =   new   byte[size];//指定缓冲区的大小
                                  if(size>fLen)size=Convert.ToInt32(fLen);
                                  long   fPos=0;
                                  bool   isEnd=false;
                                  while   (!isEnd)
                                  {
                                          if((fPos+size)>fLen)
                                          {
                                                  size=Convert.ToInt32(fLen-fPos);
                                                  readData   =   new   byte[size];
                                                  isEnd=true;
                                          }
                                          fs.Read(readData,   0,   size);//读入一个压缩块
                                          Response.BinaryWrite(readData);
                                          fPos+=size;
                                  }
                                  fs.Close();
                                  System.IO.File.Delete(fullPath);
                                  return   true;
                          }
                          catch
                          {
                                  return   false;
                          }
                  }