微信公共平台开发2 .net

成功的走出第一步后，我们紧接着趁热打铁开始下一步：

　　成为了开发者之后微信平台会给您AppId和AppSecret，在订阅号中是没有的，所以因该申请一下服务号，

　　若没有请注意上一篇http://www.cnblogs.com/QLJ1314/p/3837952.html成为开发者

　　　　有了ACCESSTOKEN才能做添加菜单，上传/下载图片等功能

　　　　所以这次还要借用一下大哥的代码了，上代码：

　原文出处：　http://blog.csdn.net/hemeng1980/article/details/19502455

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private string GetToken()       {               // 也可以这样写:           //return  GetPage("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=你的appid&secret=你的secret", "");                      string res = "";           HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential  &appid=你的appid&secret=你的secret");   req.Method = "GET";           using (WebResponse wr = req.GetResponse())           {               HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse();                       StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);                       string content = reader.ReadToEnd();                      List<ACCESSTOKEN> myACCESSTOKEN = Json.JSONStringToList<ACCESSTOKEN>(content);               res = myACCESSTOKEN[0].access_token;                }                    return res;       }       public string GetPage(string posturl, string postData)       {           Stream outstream = null;           Stream instream = null;           StreamReader sr = null;           HttpWebResponse response = null;           HttpWebRequest request = null;           Encoding encoding = Encoding.UTF8;           byte[] data = encoding.GetBytes(postData);           // 准备请求...           try           {               // 设置参数               request = WebRequest.Create(posturl) as HttpWebRequest;               CookieContainer cookieContainer = new CookieContainer();               request.CookieContainer = cookieContainer;               request.AllowAutoRedirect = true;               request.Method = "POST";               request.ContentType = "application/x-www-form-urlencoded";               request.ContentLength = data.Length;               outstream = request.GetRequestStream();               outstream.Write(data, 0, data.Length);               outstream.Close();               //发送请求并获取相应回应数据               response = request.GetResponse() as HttpWebResponse;               //直到request.GetResponse()程序才开始向目标网页发送Post请求               instream = response.GetResponseStream();               sr = new StreamReader(instream, encoding);               //返回结果网页（html）代码               string content = sr.ReadToEnd();               string err = string.Empty;               return content;           }           catch (Exception ex)           {               string err = ex.Message;               Response.Write(err);               return string.Empty;           }       }