I create a webpage that will download our APK files to Android Smartphone but when I try to do it on Android, I get HTML instead of download window. But it worked perfectly on my PC. Heres my code.

 public static void DownloadFile(string filename, string sContentType, System.Web.UI.Page page)
    {
        string path = page.Server.MapPath(filename); //get file object as FileInfo
        System.IO.FileInfo file = new System.IO.FileInfo(path); //-- if the file exists on the server
        if (file.Exists)
        {
            page.Response.Clear();
            page.Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
            page.Response.AddHeader("Content-Length", file.Length.ToString());
            if(sContentType.Length > 0)
                page.Response.ContentType = sContentType;
            else
                page.Response.ContentType = "application/octet-stream";

            page.Response.WriteFile(file.FullName);
            page.Response.Flush();
            page.Response.End(); //if file does not exist

        }
    }