public static void SetConfirmationReturnUrl(this HttpContextBase httpContext, string returnUrl)
 {
     var confirmationContext = new ConfirmationContext
     {
         ReturnUrl = returnUrl,
     };
     string json = JsonConvert.SerializeObject(confirmationContext);
     string protectedJson = Convert.ToBase64String(MachineKey.Protect(Encoding.UTF8.GetBytes(json), "ConfirmationContext"));
     httpContext.Response.Cookies.Add(new HttpCookie("ConfirmationContext", protectedJson));
 }
        public static void SetConfirmationReturnUrl(this HttpContextBase httpContext, string returnUrl)
        {
            var confirmationContext = new ConfirmationContext
            {
                ReturnUrl = returnUrl,
            };
            string json          = JsonConvert.SerializeObject(confirmationContext);
            string protectedJson = Convert.ToBase64String(MachineKey.Protect(Encoding.UTF8.GetBytes(json), "ConfirmationContext"));

            httpContext.Response.Cookies.Add(new HttpCookie("ConfirmationContext", protectedJson));
        }