下载文件

try

{

    string strFilePath = Server.MapPath("~") + "/excel/20170206104654.xlsx";//服务器文件路径

    FileInfo fileInfo = new FileInfo(strFilePath);

    Response.Clear();

    Response.Charset = "GB2312";

    Response.ContentEncoding = System.Text.Encoding.UTF8;

    Response.AddHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(fileInfo.Name));

    Response.AddHeader("Content-Length", fileInfo.Length.ToString());

    Response.ContentType = "application/x-bittorrent";

    Response.WriteFile(fileInfo.FullName);

    Response.End();

}

catch (System.Threading.ThreadAbortException ex)

{

    //不做处理

}