asp.net实现服务器文件下载到本地的方法

//服务器文件路径

stringstrFilePath = Server.MapPath("~") +"/excel/20170206104654.xlsx";

FileInfo fileInfo =newFileInfo(strFilePath);

Response.Clear();

Response.AddHeader("content-disposition","attachment;filename="+ Server.UrlEncode(fileInfo.Name.ToString()));

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

Response.ContentType ="application/octet-stream";

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

Response.WriteFile(strFilePath);