The code below can't run under Ajax, could you modify it for me? Thanks!

        public static void SaveFile(string FileName, byte[] ss)
        {
            long fileSize = ss.LongLength;

            if (fileSize >= 1)
            {
                HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.ContentType = "application/octet-stream";
                HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=\"" + FileName + "\"");
                HttpContext.Current.Response.AddHeader("Content-Length", fileSize.ToString());
                HttpContext.Current.Response.BinaryWrite(ss);
                HttpContext.Current.Response.End();
            }
        }

You can use System.IO.File.Save to save a file.

Thanks! 

I use  public static void SaveFile(string FileName, byte[] ss) to download remote data and save it to local file!

If I use System.IO.File.Save, does it mean that first save data in remote server, then create a URL and let user to download ? If so, it's not my need.

Hi,

Thank you for your post!

The only solution I think is using Iframe.

Then what you need to do is change the Iframe's src during/after the AJAX postback, then do the save opration on the load event of the Iframe's content page.

Please refer to http://encosia.com/2007/02/23/ajax-file-downloads-and-iframes/ to get more information.

If you have further questions,let me know!

Best Regards,