Csharp 如何使用C#和Graph API从Azure Directory获取用户详细信息

错误102通常发生在使用100并调用101端点.

• 100是非交互流，101端点仅与用户交互流一起工作.
• 因此，要么切换到用户交互流，要么使用100并呼叫101端点.

授予应用程序API权限以使用100:

然后通过修改100来修改代码，如下所示:

using Azure.Identity;
using Microsoft.Graph;
using Microsoft.Graph.Models;
using System;
using System.Threading.Tasks;

namespace UserProperties
{
    public class GraphHandler
    {
        public GraphServiceClient GraphClient { get; set; }

        public GraphHandler()
        {
            var tenantId = "TenantID";
            var clientId = "ClientID";
            var clientSecret = "ClientSecret";
            GraphClient = CreateGraphClient(tenantId, clientId, clientSecret);
        }

        public GraphServiceClient CreateGraphClient(string tenantId, string clientId, string clientSecret)
        {
            var options = new TokenCredentialOptions
            {
                AuthorityHost = AzureAuthorityHosts.AzurePublicCloud
            };

            var clientSecretCredential = new ClientSecretCredential(tenantId, clientId, clientSecret, options);
            var scopes = new[] { "https://graph.microsoft.com/.default" };

            return new GraphServiceClient(clientSecretCredential, scopes);
        }

        public async Task userDetail()
        {
            try
            {
                // Example usage to get user details directly
                var userId = "UserID"; // Replace with the desired user's ID
                var user = await GraphClient.Users[userId].GetAsync();

                // Print user ID and DisplayName
                Console.WriteLine($"User ID: {user.Id}");
                Console.WriteLine($"Display Name: {user.DisplayName}");
            }
            catch (ServiceException ex)
            {
                Console.WriteLine($"Error getting user details: {ex.Message}");
            }
        }
    }

    class Program
    {
        static async Task Main(string[] args)
        {
            GraphHandler handler = new GraphHandler();

            // Example usage to get my details
            await handler.userDetail();
        }
    }
}

The user details displayed successfully like below:

如果您想调用101端点，则授予User.Read委托API权限，并参考MsDoc (except Client credentials provider choose any of the flow)并 Select 交互流进行认证.

100

To get the User Profile Photo, use the below code:

using System;
using System.IO;
using System.Threading.Tasks;
using Azure.Identity;
using Microsoft.Graph;
using Microsoft.Graph.Models;

namespace UserProperties
{
    public class GraphHandler
    {
        public GraphServiceClient GraphClient { get; set; }

        public GraphHandler()
        {
            var tenantId = "TenantID";
            var clientId = "ClientID";
            var clientSecret = "ClientSecret";
            GraphClient = CreateGraphClient(tenantId, clientId, clientSecret);
        }

        public GraphServiceClient CreateGraphClient(string tenantId, string clientId, string clientSecret)
        {
            var options = new TokenCredentialOptions
            {
                AuthorityHost = Azure.Identity.AzureAuthorityHosts.AzurePublicCloud
            };

            var clientSecretCredential = new Azure.Identity.ClientSecretCredential(tenantId, clientId, clientSecret, options);
            var scopes = new[] { "https://graph.microsoft.com/.default" };

            return new GraphServiceClient(clientSecretCredential, scopes);
        }

        public async Task<User> GetUser(string userId)
        {
            try
            {
                var user = await GraphClient.Users[userId].GetAsync();
                return user;
            }
            catch (ServiceException ex)
            {
                Console.WriteLine($"Error getting user details: {ex.Message}");
                return null;
            }
        }

        public async Task PrintProfilePicture(string userId)
        {
            var user = await GetUser(userId);
            if (user != null)
            {
                try
                {
                    using (var photoStream = await GraphClient.Users[userId].Photo.Content.GetAsync())
                    {
                        var fileName = $"{userId}_profile_pic.jpg";
                        using (var fileStream = File.Create(fileName))
                        {
                            await photoStream.CopyToAsync(fileStream);
                            Console.WriteLine($"Profile picture saved as: {fileName}");
                        }
                    }
                }
                catch (ServiceException ex)
                {
                    Console.WriteLine($"Error downloading profile picture: {ex.Message}");
                }
            }
        }
    }

    class Program
    {
        static async Task Main(string[] args)
        {
            var handler = new GraphHandler();
            var userId = "UserID"; // Replace with the desired user's ID
            await handler.PrintProfilePicture(userId);
        }
    }
}

Reference:

Get a user - Microsoft Graph v1.0 | Microsoft