c# - GroupPrincipal.Members.Add(userPrincipal) 抛出错误

Question

我有以下 C# 代码，可以将用户添加到现有组。现在每次我尝试将用户添加到组时都会抛出以下错误:

Unable to cast COM object of type 'System.__ComObject' to interface type 'IADsGroup'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{27636B00-410F-11CF-B1FF-02608C9E7553}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).System.DirectoryServices.AccountManagement

相关代码如下:

// Clearing result message variable before using
    sResult = "";

    bool bGroupMemberOf = false;
    using (PrincipalContext sourceContext = new PrincipalContext(ContextType.Domain, sDomainName))
    {
        try
        {
            GroupPrincipal group = GroupPrincipal.FindByIdentity(sourceContext, IdentityType.Name, sGroupName);
            if (group.Members.Contains(sourceContext, IdentityType.SamAccountName, sAccountName))
            {
                sResult += sAccountName + " already member of" + group.Name + Environment.NewLine;
            }
            group.Members.Add(sourceContext, IdentityType.SamAccountName, sAccountName);
            group.Save();
            group.Dispose();

            sResult += sAccountName + " is now member of " + group.Name + Environment.NewLine;
        }
        catch (Exception error)
        {
            return  error.Message + "-" + error.Source + Environment.NewLine;
        }
    }
    return sResult;

有人可以告诉我这里出了什么问题吗？我几乎找不到对我收到的错误的任何引用。

Answer 1

您能否尝试稍微重构代码以同时使用 GroupPrincipal 和 UserPrincipal，如下所示:

try {
   GroupPrincipal group = GroupPrincipal.Find....
   UserPrincipal user = UserPrincipal.Find....

   group.Members.Add( user );
}

这也会抛出异常吗？