使用 Graph API/C# 删除 Azure AD 中的应用程序角色时出现问题

我正在尝试使用 Visual Studio/C#/Graph API 在 AzureAD 中添加/删除应用程序角色。我可以成功地将用户添加到应用程序角色，但删除（或删除）角色不起作用。

我在互联网上进行了研究，这似乎是 AzureAD 图形 API 本身的问题。查看：

https://social.msdn.microsoft.com/Forums/sqlserver/en-US/5707763c-41f7-4465-abdb-3a8d8ded153b/graph-api-apiversion15-how-to-remove-user-from-application-role-使用-c-net?forum=WindowsAzureAD https://social.msdn.microsoft.com/Forums/sqlserver/en-US/5707763c-41f7-4465-abdb-3a8d8ded153b/graph-api-apiversion15-how-to-remove-user-from-application-role-using-c-net?forum=WindowsAzureAD

然而，这是一篇旧文章，因此不确定现在是否有任何解决方法。

感谢您提供解决此问题的任何帮助。

我可以成功地将用户添加到 ApplicationRole，但删除（或删除）角色不起作用。

我可以使用以下代码删除应用程序角色。

var listRoles = user.AppRoleAssignments.ToList();
user.AppRoleAssignments.Remove(listRoles[0]); //just demo: you could remove the role as your wanted
user.UpdateAsync().Wait();

以下是我的详细测试演示代码

1.获取访问令牌

private static async Task<string> GetAppTokenAsync(string graphResourceId, string tenantId, string clientId, string secretKey)
        {
            string aadInstance = "https://login.microsoftonline.com/" + tenantId + "/oauth2/token";
            AuthenticationContext authenticationContext = new AuthenticationContext(aadInstance, false);
            var result = await authenticationContext.AcquireTokenAsync(graphResourceId,
                new ClientCredential(clientId, userId));
            return result.AccessToken;
        }

2.初始化图形客户端。

var graphResourceId = "https://graph.windows.net";
var tenantId = "tenantId";
var clientId = "client Id";
var secretKey = "secret key";
var servicePointUri = new Uri(graphResourceId); 
var serviceRoot = new Uri(servicePointUri, tenantId);
var activeDirectoryClient = new ActiveDirectoryClient(serviceRoot, async () => await GetAppTokenAsync(graphResourceId, tenantId, clientId, secretKey));

3.创建应用程序和服务主体

 Application appObject = new Application { DisplayName = "Test-Demo App" };
 appObject.IdentifierUris.Add("https://localhost/demo/" + Guid.NewGuid());
 appObject.ReplyUrls.Add("https://localhost/demo");
 AppRole appRole = new AppRole
 {
    Id = Guid.NewGuid(),
    IsEnabled = true,
    DisplayName = "Something",
    Description = "Anything",
    Value = "policy.write"
 };

 appRole.AllowedMemberTypes.Add("User");
 appObject.AppRoles.Add(appRole);
 activeDirectoryClient.Applications.AddApplicationAsync(appObject).Wait();
 // create a new Service principal
 ServicePrincipal newServicePrincpal = new ServicePrincipal
 {
    DisplayName = appObject.DisplayName,
    AccountEnabled = true,
    AppId = appObject.AppId
 };
activeDirectoryClient.ServicePrincipals.AddServicePrincipalAsync(newServicePrincpal).Wait();

4.添加角色分配

User user = (User) activeDirectoryClient.Users.GetByObjectId("userobjectId").ExecuteAsync().Result;
AppRoleAssignment appRoleAssignment = new AppRoleAssignment
{
       Id = appRole.Id,
       ResourceId = Guid.Parse(newServicePrincpal.ObjectId),
       PrincipalType = "User",
       PrincipalId = Guid.Parse(user.ObjectId),

  };
user.AppRoleAssignments.Add(appRoleAssignment);
user.UpdateAsync().Wait();

5.删除用户的角色

var listRoles = user.AppRoleAssignments.ToList();
user.AppRoleAssignments.Remove(listRoles[0]);
user.UpdateAsync().Wait();