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//TransmitFileʵÏÖÏÂÔØ
    protected void Button1_Click(object sender, EventArgs
e)
    {
        /*
       
΢ÈíΪResponse¶ÔÏóÌṩÁËÒ»¸öÐµķ½·¨TransmitFileÀ´½â¾öʹÓÃResponse.BinaryWrite
       
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        */
        Response.ContentType = "application/x-zip-compressed";
       
Response.AddHeader("Content-Disposition",
"attachment;filename=z.zip");
        string filename =
Server.MapPath("DownLoad/z.zip");
       
Response.TransmitFile(filename);
    }
    //WriteFileʵÏÖÏÂÔØ
    protected void Button2_Click(object sender,
EventArgs e)
    {
        /*
        using System.IO;
        */
        string fileName = "asd.txt";//¿Í»§¶Ë±£´æµÄÎļþÃû
       
string filePath = Server.MapPath("DownLoad/aaa.txt");//·¾¶
        FileInfo fileInfo = new FileInfo(filePath);
       
Response.Clear();
        Response.ClearContent();
       
Response.ClearHeaders();
        Response.AddHeader("Content-Disposition",
"attachment;filename=" + fileName);
       
Response.AddHeader("Content-Length", fileInfo.Length.ToString());
      &


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