COM Interops InvalidCastException with IGroupPolicyObject

我使用 COM 定义了以下类，以使用 C#.NET 使用 IGroupPolicyObject：

 [ComImport, Guid("EA502722-A23D-11d1-A7D3-0000F87571E3")]
    public class GPClass
    {
        // The C# compiler will add a parameterless constructor that we will call          // to create an instance of the COM coclass.
    }

   [ComImport, Guid("EA502723-A23D-11d1-A7D3-0000F87571E3"),  
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]  
    public interface IGroupPolicyObject  
    {  
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1716:IdentifiersShouldNotMatchKeywords")]  
        void New(  
            [MarshalAs(UnmanagedType.LPWStr)] string domainName,  
            [MarshalAs(UnmanagedType.LPWStr)] string displayName,  
            uint flags);  
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]  
        void OpenDsgpo(  
            [MarshalAs(UnmanagedType.LPWStr)] string path,  
            uint flags);  
        void OpenLocalMachineGpo(  
            uint flags);  
        void OpenRemoteMachineGpo(  
            [MarshalAs(UnmanagedType.LPWStr)] string computerName,  
            uint flags);  
        void Save(  
            [MarshalAs(UnmanagedType.Bool)] bool machine,  
            [MarshalAs(UnmanagedType.Bool)] bool add,  
            [MarshalAs(UnmanagedType.LPStruct)] Guid extension,  
            [MarshalAs(UnmanagedType.LPStruct)] Guid app);  
        void Delete();  
        void GetName(  
            [MarshalAs(UnmanagedType.LPWStr)] StringBuilder name,  
            int maxLength);  
        void GetDisplayName(  
            [MarshalAs(UnmanagedType.LPWStr)] StringBuilder name,  
            int maxLength);  
        void SetDisplayName(  
            [MarshalAs(UnmanagedType.LPWStr)] string name);  
        void GetPath(  
            [MarshalAs(UnmanagedType.LPWStr)] StringBuilder path,  
            int maxPath);  
        void GetDSPath(  
            uint section,  
            [MarshalAs(UnmanagedType.LPWStr)] StringBuilder path,  
            int maxPath);  
        void GetFileSysPath(  
            uint section,  
            [MarshalAs(UnmanagedType.LPWStr)] StringBuilder path,  
            int maxPath);  
        IntPtr GetRegistryKey(uint section);  
        uint GetOptions();  
        void SetOptions(  
            uint options,  
            uint mask);  
        void GetMachineName(  
            [MarshalAs(UnmanagedType.LPWStr)] StringBuilder name,  
            int maxLength);  
        uint GetPropertySheetPages(  
            out IntPtr pages);  
    }

问题是当我尝试使用IGroupPolicyObject时，如下所示，我得到一个InvalidCastException：

GPClass gpClass = new GPClass();
IGroupPolicyObject comGroupPolicyObject = (IGroupPolicyObject)gpClass;

我得到的例外是：无法将类型为"ConfigureRemoteSources.GPClass"的 COM 对象强制转换为接口类型"ConfigureRemoteSources.IGroupPolicyObject"。此操作失败，因为 COM 组件上对具有 IID"{EA502722-A23D-11D1-A7D3-0000F87571E3}"的接口的 QueryInterface 调用失败，原因是出现以下错误：不支持此类接口（HRESULT 例外：0x80004002 （E_NOINTERFACE））。

关于如何解决这个问题的任何想法？谢谢