添加 Azure Active Directory 服务，调用方法

 引入dll ：Microsoft.IdentityModel.JsonWebTokens
 
 1                     string url = string.Format("{0}token", ConfigurationManager.AppSettings["AAdLoginUrl"]);
 2                     HttpClient client = new HttpClient();
 3                     var dic_Form = new Dictionary<string, string>();
 4                     dic_Form.Add("client_id", ConfigurationManager.AppSettings["Client_Id"]);
 5                     dic_Form.Add("scope", "openid");
 6                     dic_Form.Add("code", codestr);
 7                     dic_Form.Add("redirect_uri", ConfigurationManager.AppSettings["Redirect_Uri"]);
 8                     dic_Form.Add("grant_type", "authorization_code");
 9                     dic_Form.Add("client_secret", ConfigurationManager.AppSettings["Client_Secret"]);
10                     var content = new FormUrlEncodedContent(dic_Form);
11                     var response = client.PostAsync(url, content).Result;
12                     resultStr = response.Content.ReadAsStringAsync().Result;
13                     if (!string.IsNullOrEmpty(resultStr))
14                     {
15                         //ADDResultModel根据文档创建的返回信息实体类，需要自己根据需求创建
16                         var result = JsonConvert.DeserializeObject<ADDResultModel>(resultStr);
17                         if (!string.IsNullOrEmpty(result.error_description))
18                         {
19                             context.Response.Write(result.error_description);
20                         }
21                         if (!string.IsNullOrEmpty(result.access_token))
22                         {
23                             JsonWebTokenHandler handler = new JsonWebTokenHandler();
24                             if (handler.CanReadToken(result.access_token))
25                             {
26                                 JsonWebToken jwt = handler.ReadJsonWebToken(result.access_token);
27                                 var claims = jwt.Claims;
28                                 Claim claim1 = claims.Where(i => i.Type == "oid").FirstOrDefault();
29                                 Claim claim2 = claims.Where(i => i.Type == "unique_name").FirstOrDefault();
30                                 Console.WriteLine(claim1.Value);
31                                 Console.WriteLine(claim2.Value);
32                             }
33                         }
34                     }
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