pinvoke - WlanEnumInterfaces 不返回 Guid C# Whit P/Invoke

Question

Hy Guy 我有一个问题，c# 调用本机函数 wlanenuminterfaces 函数返回 ok = (0) 但我不知道为什么......接口的 Guid 都是 {000000000000000000} 为什么？有人可以帮助我吗？非常感谢我发布代码...

[DllImport("wlanapi.dll")]
internal static extern int WlanEnumInterfaces([In]IntPtr HandleClient,   [In,Out]IntPtr Reserved,  [In,Out]  WLAN_INTERFACE_INFO_LIST ine);`

 [StructLayout(LayoutKind.Sequential)]
internal class WLAN_INTERFACE_INFO_LIST
{
    internal int dwNumberOfItems;
    internal int dwIndex;
    internal  WLAN_INTERFACE_INFO[] InterfaceInfo;

}


[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
internal class WLAN_INTERFACE_INFO
{
    internal Guid interfaceGuid;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
    internal string strInterfaceDescription;
    internal WLAN_INTERFACE_STATE Istate;
}


internal enum WLAN_INTERFACE_STATE
{
    wlan_interface_state_not_ready = 0,
    wlan_interface_state_connected = 1,
    wlan_interface_state_ad_hoc_network_formed = 2,
    wlan_interface_state_disconnecting = 3,
    wlan_interface_state_disconnected = 4,
    wlan_interface_state_associating = 5,
    wlan_interface_state_discovering = 6,
    wlan_interface_state_authenticating = 7
}
 info = new WLAN_INTERFACE_INFO_LIST();
        list = new WLAN_INTERFACE_INFO();


       IntPtr info1 =  Marshal.AllocHGlobal(Marshal.SizeOf(info));
       IntPtr list1 =  Marshal.AllocHGlobal(Marshal.SizeOf(list));



        int enuminterface = Win32Intereop.WlanEnumInterfaces(handle, IntPtr.Zero, info);
        if (enuminterface != 0)
        {
            MessageBox.Show("Problema Enum Interface");
        }

        IntPtr num = (IntPtr)info.dwNumberOfItems;
        info.dwNumberOfItems = Marshal.ReadInt32(num);

        info.InterfaceInfo = new WLAN_INTERFACE_INFO[info.dwNumberOfItems];


        for (int i = 0; i < info.dwNumberOfItems; i++)
        {

            info.InterfaceInfo[i] = list;
        }