api需要先獲取token時

public static string PostRequest(string Url)
{
                string appId = "";
                string appSecret = "";
                string app = appId + ":" + appSecret;
                string Auth = EncodeBase64("utf-8", app);  //64位加密 方法需要自己寫

                HttpWebRequest webRequest 
 
= (HttpWebRequest)WebRequest.Create(Url);
                webRequest.Method = "post";
                webRequest.ContentType = "application/x-www-form-urlencoded";
                webRequest.Timeout = 20000;
                webRequest.Headers.Add("Authorization", "Basic " + Auth);  //header部分
                NameValueCollection outgoingQueryString = HttpUtility.ParseQueryString(String.Empty);
                outgoingQueryString.Add(
 
"引數", "引數");
                outgoingQueryString.Add("引數", "引數");
                string postData = outgoingQueryString.ToString();
                byte[] byteArray = Encoding.UTF8.GetBytes(postData);//引數轉成位元組
                using (Stream reqStream = webRequest.GetRequestStream())
                {
                    reqStream.Write(byteArray, 
 
0, byteArray.Length);
                }
                HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
                using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
                {        
                  retuen  reader.ReadToEnd() ;   
　　　　　　　　　}
} 

使用token訪問api

public static string request(string url,string Authorization)
{
         HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
            webRequest.Method = "get";
            webRequest.ContentType = "application/x-www-form-urlencoded";
            webRequest.Timeout = 20000;
            webRequest.Headers.Add("Authorization", Authorization);

            HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse();
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
            {
　　　　　　　　　　return reader.ReadToEnd();

　　　　　　　}
}