ASP.NetにおけるWebAPIとAjax間のクロスドメインデータ連携時のCookieデータの転送について

/// <summary>
  /// 给指定的 Cookies 赋值
  /// </summary>
  /// <param name="cookKey">Cookies 名称</param>
  /// <param name="value">Cookies 值</param>
  /// <param name="domain">设置与此 Cookies 关联的域（如：“.tpy100.com”）（可以使该域名下的二级域名访问）</param>
  public static void SetCookiesValue(string cookKey, string value, string domain)
  {
   HttpCookie cookie = new HttpCookie(cookKey);
   cookie.Value = value;
   cookie.HttpOnly = true;
   if (!string.IsNullOrEmpty(domain) && domain.Length > 0)
    cookie.Domain = domain;
   HttpContext.Current.Response.Cookies.Add(cookie);
  }

// 设置Cookies
  function set() {
   var url = "http://a.wbl.com/api/setvalue/888888";
   $.ajax({
    type: "get",
    url: url,
    dataType: "jsonp",
    jsonp: "callbackparam", //服务端用于接收callback调用的function名的参数
    jsonpCallback: "success_jsonpCallback", //callback的function名称
    success: function (json) {
     console.log(json);
     alert(json);
    },
    error: function () {
     alert('fail');
    }
   });
  }
  // 获取Cookies
  function get() {
   var url = "http://b.wbl.com/api/getvalue";
   $.ajax({
    type: "get",
    url: url,
    dataType: "jsonp",
    jsonp: "callbackparam", //服务端用于接收callback调用的function名的参数
    jsonpCallback: "success_jsonpCallback", //callback的function名称
    success: function (json) {
     console.log(json);
     alert(json);
    },
    error: function () {
     alert('fail');
    }
   });
  }

[Route("api/GetValue")]
  [HttpGet]
  public void GetValue()
  {
   string ccc = MyTools.Request.GetString("callbackparam");
   var a = new { name = "Cookies", value = MyTools.Cookies.GetCookiesValue("name") };
   string result = ccc + "({\"Cookies\":\"" + MyTools.Cookies.GetCookiesValue("name") + "\"})";
   //var response = Request.CreateResponse(HttpStatusCode.OK);
   //response.Content = new StringContent(result, Encoding.UTF8);

   HttpContext.Current.Response.Write(result);
   HttpContext.Current.Response.End();
   // return response;
  }
  [Route("api/SetValue/{id}")]
  [HttpGet]
  public void SetValue(int id)
  {
   //string domain = "";
   string domain = ".wbl.com";
   MyTools.Cookies.ClearCookies("name", domain);
   MyTools.Cookies.SetCookiesValue("name", id.ToString(), domain);

   string ccc = MyTools.Request.GetString("callbackparam");
   string result = ccc + "({\"result\":\"设置成功\"})";

   HttpContext.Current.Response.Write(result);
   HttpContext.Current.Response.End();
  }