asp.net 下载文件(图片、word、excel等)

时间:2022-06-16 19:22:38
    string filePath = Server.MapPath("~/excel.xlsx");
if (File.Exists(filePath))
{
FileStream fs = new FileStream(filePath, FileMode.Open);
byte[] bytes = new byte[(int)fs.Length];
fs.Read(bytes, , 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(Path.GetFileName(filePath), System.Text.Encoding.UTF8));
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();
}