C# COM NLA 错误 HRESULT 0x80040202

Question

好的，所以我正在尝试使用 System.Runtime.InteropServices.ComTypes 中的 NetworkListManager 使用此代码设置网络连接事件：

private NetworkListManager nlm; //This is initialized before
private IConnectionPoint icp;
private int cookie = 0;

//This part is wrapped in a function call
Console.WriteLine("Subscribing the INetworkListManagerEvents");
IConnectionPointContainer icpc = (IConnectionPointContainer)nlm;
Guid tempGuid = typeof(INetworkListManagerEvents).GUID;
icpc.FindConnectionPoint(ref tempGuid, out icp);
//The error is thrown in icp.Advise with code 0x80040202
icp.Advise(this, out cookie);

我已经尝试过搜索，但大多数人对这个错误有不同的关注

Answer 1

NETWORKLIST的正确使用方法是这样的：

using NETWORKLIST;

public class Foo : INetworkListManagerEvents 
{
    private NetworkListManager nlm; 
    private IConnectionPoint icp;
    private int cookie = 0;

    public Foo()
    {
        nlm = new NetworkListManager();
        IConnectionPointContainer icpc = (IConnectionPointContainer)nlm;
        Guid tempGuid = typeof(INetworkListManagerEvents).GUID;
        icpc.FindConnectionPoint(ref tempGuid, out icp);
        icp.Advise(this, out cookie);
    }

    //this method must be implemented
    public void ConnectivityChanged(NLM_CONNECTIVITY newConnectivity)
    {
        //Your code goes here
    }
}

我做错的是我忘了实现INetworkListManagerEvents

C# COM NLA 错误 HRESULT 0x80040202

C# COM NLA error HRESULT 0x80040202

c#

com

events

error-code