Question

C#网页点击按钮,提供文件下载功能的问题....

protected void Button3_Click(object sender, EventArgs e)
{
string cl = this.ClassList.SelectedValue.ToString();
string fileName = cl + ".doc";
this.Response.Clear();
this.Response.ContentType = "application/msword";
this.Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
this.Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
this.Response.WriteFile("D:\\Project\\TopicCardPrint\\TopicCardPrint\\TopicCardPrint\\TopicCard\\" + cl + "原版.doc");
this.Response.Flush();
this.Response.End();
}

360极速浏览器ie模式和ie9模式都是第一幅图的情况,直接使用ie9就是第二幅图的情况.但我不管用哪个浏览器在邮箱里进行附件下载都是正常可以使用的..所以我觉得是我代码哪里有问题...
http://zhidao.baidu.com/question/35895818.html这个问题里的4个方法我都用过了...都是上述情况....

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Answer 1

private void Button1_Click(object sender, System.EventArgs e)
 {
  string sFileName = Server.MapPath("");//在这里请先读取您的文件
  FileStream fileStream=new FileStream(sFileName,FileMode.Open);
  long fileSize = fileStream.Length;
  byte[] fileBuffer=new byte[fileSize];
  fileStream.Read(fileBuffer, 0, (int)fileSize);
  //如果不写fileStream.Close()语句，用户在下载过程中选择取消，将不能再次下载
  fileStream.Close();
  Context.Response.ContentType="application/octet-stream";
  Context.Response.AppendHeader("Content-Disposition","attachment;filename="+HttpUtility.UrlEncode(sFileName,Encoding.UTF8 ));
  Context.Response.AddHeader("Content-Length",fileSize.ToString());
  Context.Response.BinaryWrite(fileBuffer);
  Context.Response.End();
  Context.Response.Close();
 }

   this.Response.WriteFile

  this.Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);

这两个东西.您这么用虽然没有错误.但是并不推荐,因为在某些特殊的情况下.这样做会导致一些奇怪的错误出现,试试上述的方法吧.如果有问题.您可以继续追问.或直接向我求助