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

}