//下载文件
public ActionResult DownFile(String filename)
{
FileService fservice = new FileService();
if (!fservice.CheckFileExsit(filename))
{
ViewData["DownloadState"] = "文件不存在";
}
else
{
fservice.UpdateDownLoadTime(filename);
ViewData["DownloadState"] = "开始下载";
FileStream fs = new FileStream(AppDomain.CurrentDomain.BaseDirectory + "data/" + filename, FileMode.Open);
byte[] bytes = new byte[(int)fs.Length];
fs.Read(bytes, 0, bytes.Length);
fs.Close();
Response.Charset = "UTF-8";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(filename));
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();
}
return(View("DownFile"));
}