C# 使用GroupPrincipal从Active Directory中的组获取所有用户

我正在尝试获取AD中某个特定组的所有用户，但遇到异常：“指定的目录服务属性或值不存在。”

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使用容器指定您的根目录

using (var principalContext = new PrincipalContext(ContextType.Domain, "TEST.COM", "DC=TEST,DC=COM"))
                {
                    //using (var group = GroupPrincipal.FindByIdentity(context, windowsGroup.TrimEnd('*')))
                    using (var groupPrincipal = GroupPrincipal.FindByIdentity(principalContext, IdentityType.SamAccountName, "groupName"))
                    {
                        if (groupPrincipal != null)
                        {
                            var users = groupPrincipal.GetMembers();
                            foreach (UserPrincipal userPrincipal in users)
                            {
                                //user variable has the details about the user 
                            }
                        }
                    }
                }

using (var principalContext = new PrincipalContext(ContextType.Domain, "TEST.COM", "DC=TEST,DC=COM"))
                {
                    //using (var group = GroupPrincipal.FindByIdentity(context, windowsGroup.TrimEnd('*')))
                    using (var groupPrincipal = GroupPrincipal.FindByIdentity(principalContext, IdentityType.SamAccountName, "groupName"))
                    {
                        if (groupPrincipal != null)
                        {
                            var users = groupPrincipal.GetMembers();
                            foreach (UserPrincipal userPrincipal in users)
                            {
                                //user variable has the details about the user 
                            }
                        }
                    }
                }