提交URL微信Post请求报错,错误代码：40033 include \uxxxx will create fail!

[allansky]

URL中含有"&"符号就会报错,其它字符没有问题,错误代码：40033 include \uxxxx will create fail!
请教各位大神看看是什么原因!!
public JsonResult CreateMenu(string accessToken, ButtonGroup buttonData)
{
JavaScriptSerializer js = new JavaScriptSerializer();
var jsonString = js.Serialize(buttonData);
CookieContainer cookieContainer = null;// new CookieContainer();

using (MemoryStream ms = new MemoryStream())
{
var bytes = Encoding.UTF8.GetBytes(jsonString);
ms.Write(bytes, 0, bytes.Length);
ms.Seek(0, SeekOrigin.Begin);

var url = string.Format("https://api.weixin.qq.com/cgi-bin/menu/create?access_token={0}", accessToken);
var result = Post.PostGetJson<WxJsonResult>(url, cookieContainer, ms);
return result;
}

[lkhuge]

access_token字符串中可能会有“&”吗？

[wyx100]

引用 1 楼 lkhuge 的回复:

access_token字符串中可能会有“&”吗？

顶

[changshenglugu]

是不是要把jsonString用base64格式加密，或者要进行urlencode转换方便http传输呢？