调用钉钉信息到C#的代码，请帮解决一下；

Question

以下代码，是想调用钉钉的通讯录信息，到C#的DGV，以做进一步展示，但在实际运行中，读取不到通讯录的用户信息，请帮我看看，哪里有问题，谢谢了；

using System;
using System.Data;
using System.Windows.Forms;
using System.Net.Http;
using Newtonsoft.Json;
using System.Threading.Tasks;
using System.Collections.Generic;

namespace SalaryCount
{
    public partial class Form1 : Form
    {
        private string appKey = "dingqnybw1hbp4lqyeqp";
        private string appSecret = "UfXT4o9RG0CdKIP2sXy8NhuimP24tQKGrBRYpkLo1R8y0PLy_yfeI7fbCQHDPbQZ";
        private string accessToken;
        private DataTable dtUsers;
        public Form1()
        {
            InitializeComponent();
            dtUsers = new DataTable();
            dtUsers.Columns.Add("UserID");
            dtUsers.Columns.Add("Name");
            dtUsers.Columns.Add("Department");
            dataGridView1.DataSource = dtUsers;
        }
        private async void button1_Click(object sender, EventArgs e)
        {
            try
            {
                accessToken = await GetAccessTokenAsync(appKey, appSecret);
                if (!string.IsNullOrEmpty(accessToken))
                {
                    string departmentId = "1"; // 部门 ID，如果要获取全部部门，可以不设置
                    var userList = await FetchUserListAsync(accessToken, departmentId);

                    // 清空 dtUsers 中的数据
                    dtUsers.Rows.Clear();

                    // 将获取到的用户列表填充到 dtUsers 中
                    foreach (var user in userList)
                    {
                        dtUsers.Rows.Add(user.UserId, user.Name, user.Department);
                    }
                }
                else
                {
                    MessageBox.Show("Failed to get access token.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        private async Task<string> GetAccessTokenAsync(string appKey, string appSecret)
        {
            using (var client = new HttpClient())
            {
                var requestUrl = $"https://oapi.dingtalk.com/gettoken?appkey={appKey}&appsecret={appSecret}";
                var response = await client.GetAsync(requestUrl);
                response.EnsureSuccessStatusCode();
                var json = await response.Content.ReadAsStringAsync();
                var result = JsonConvert.DeserializeObject<dynamic>(json);

                // 检查是否成功获取了 access token
                if (result != null && result.access_token != null)
                {
                    return result.access_token;
                }
                else
                {
                    throw new Exception("Failed to get access token.");
                }
            }
        }
      private async Task<List<User>> FetchUserListAsync(string accessToken, string departmentId)
{
    using (var client = new HttpClient())
    {
        var requestUrl = $"https://oapi.dingtalk.com/topapi/v2/user/list?access_token={accessToken}&dept_id={departmentId}&offset=0&size=10";
        var response = await client.GetAsync(requestUrl);
        response.EnsureSuccessStatusCode();
        var json = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject<dynamic>(json);

        // 检查结果是否为 null
        if (result != null && result.result != null && result.result.list != null)
        {
            List<User> userList = new List<User>();
            foreach (var user in result.result.list)
            {
                userList.Add(new User
                {
                    UserId = user.UserId,
                    Name = user.Name,
                    Department = user.Department
                });
            }
            return userList;
        }
        else
        {
            throw new Exception("没有用户列表");
        }
    }
}
    }
    public class User
    {
        public string UserId { get; set; }
        public string Name { get; set; }
        public string Department { get; set; }
    }
}



    

Answer 1

请检查钉钉API的权限设置、调用方法及返回数据解析是否正确。

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