[WebMethod]
    public void SaveImage()
    {
        try
        {
            if (!System.IO.Directory.Exists(HttpContext.Current.Server.MapPath("~/Upload")))
            {
                System.IO.Directory.CreateDirectory(HttpContext.Current.Server.MapPath("~/Upload/"));
            }

            string path = HttpContext.Current.Server.MapPath("~/Upload/").ToString();
            var Request = HttpContext.Current.Request;
            if (Request.Files.Count > 0)
            {
                var file = Request.Files[0];
                file.SaveAs(path + file.FileName);
            }
        }

    catch(Exception ex){
        throw ex;
    }
  }