文件流下载

[c#]代码库

    public void ProcessRequest(HttpContext context)
    {

        string ID = context.Request["FID"].ToString();

            DataTable DTFile = Common.NoPager2("files", "", "FILENAME,IMGFILE", "", "FILEID='" + ID + "'").Tables[0];
            string FileName = DTFile.Rows[0]["FILENAME"].ToString().Trim();
            FileName = FileName.Substring(19);
            if (DTFile != null)
            {
                context.Response.Clear();
                context.Response.ContentType = "application/x-msdownload";
                context.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(FileName));
                context.Response.BinaryWrite((byte[])DTFile.Rows[0]["IMGFILE"]);
                context.Response.Flush();
                context.Response.End();
            }
    }