ASP.NET 从服务器下载文件

string fileName = “文件名";

string filePath = Server.MapPath("../DOC_FILE/") + fileName; // ../DOC_FILE/ 下载文件的文件夹路径

if (File.Exists(filePath))

{

//以字符流的形式下载文件

FileStream fs = new FileStream(filePath, FileMode.Open);

byte[] bytes = new byte[(int)fs.Length];

fs.Read(bytes, 0, bytes.Length);

fs.Close();

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

//通知浏览器下载文件而不是打开

Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));

Response.BinaryWrite(bytes);

Response.Flush();

Response.End();

}

else

{

JScript.Alert(this, "文件不存在！");

}