在方法中引用方法的结果

Question

我有两种方法，第一种方法获取访问令牌以访问AzureAD，第二种方法应该获取用户数据。当代码都在同一个方法中时，我能够使它正常工作，但是我想最终添加命令行参数来调用不同的方法，因此，我试图将授权部分分开，并在每次其他情况下调用方法被调用。这是我到目前为止的内容。

using Microsoft.Identity.Client;
using System;
using System.Threading.Tasks;
using System.Configuration;
using System.Net.Http.Headers;
using PublicClientApplication = Microsoft.Identity.Client.PublicClientApplication;

namespace SharpZure
{
    class SharpZure
    {
        static void Main(string[] args)
        {
            Auth().GetAwaiter().GetResult();
            Console.ReadKey();
        }
        static async Task Auth()
        {

            var clientApp = PublicClientApplicationBuilder.Create(ConfigurationManager.AppSettings["clientId"]).Build();
            string[] scopes = new string[] { "user.read" };
            string token = null;
            var app = PublicClientApplicationBuilder.Create(ConfigurationManager.AppSettings["clientId"]).Build();
            var accounts = await app.GetAccountsAsync();
            AuthenticationResult result = await app.AcquireTokenInteractive(scopes)
                                                   .ExecuteAsync();
            token = result.AccessToken;
            GraphServiceClient graphClient = new GraphServiceClient(
                        "https://graph.microsoft.com/v1.0",
                        new DelegateAuthenticationProvider(
                            async (requestMessage) =>
                            {
                                requestMessage.Headers.Authorization = new AuthenticationHeaderValue("bearer", token);
                            }));
        }

        static async Task UserData()
        {
            Console.WriteLine("Display user details");
            var currentUser = await graphClient.Me.Request().GetAsync();
            Console.WriteLine(currentUser.DisplayName);
        }
    }
}

当然，问题在于在UserData（）方法中，graphClient从未定义，因为在Auth（）方法中。

Answer 1

您可以做这样的事情...

namespace SharpZure
{
    class SharpZure
    {
        static void Main(string[] args)
        {
            var graphClient = await Auth();
            UserData(graphClient);
            Console.ReadKey();
        }
        static async Task<GraphServiceClient> Auth()
        {

            var clientApp = PublicClientApplicationBuilder.Create(ConfigurationManager.AppSettings["clientId"]).Build();
            string[] scopes = new string[] { "user.read" };
            string token = null;
            var app = PublicClientApplicationBuilder.Create(ConfigurationManager.AppSettings["clientId"]).Build();
            var accounts = await app.GetAccountsAsync();
            AuthenticationResult result = await app.AcquireTokenInteractive(scopes)
                                                   .ExecuteAsync();
            token = result.AccessToken;
            GraphServiceClient graphClient = new GraphServiceClient(
                        "https://graph.microsoft.com/v1.0",
                        new DelegateAuthenticationProvider(
                            async (requestMessage) =>
                            {
                                requestMessage.Headers.Authorization = new AuthenticationHeaderValue("bearer", token);
                            }));
            return graphClient;
        }

        static async Task UserData(GraphServiceClient graphClient)
        {
            Console.WriteLine("Display user details");
            var currentUser = await graphClient.Me.Request().GetAsync();
            Console.WriteLine(currentUser.DisplayName);
        }
    }
}

仅从Auth（）返回Graph Client，并将其传递给UserData（）。