public static void <callbackMethodName>(IAsyncResult).

Question

greetings! im stuck at present due to lack of knowledge. i have the following:

    public void ClientEndConnect(IAsyncResult iar)
    {
        try
        {
            CommSocket = (Socket)iar.AsyncState;
            CommSocket.EndConnect(iar);

            OnNetworkEvents eventArgs = new OnNetworkEvents(true, "Connected: " + CommSocket.RemoteEndPoint.ToString(), string.Empty);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
        catch (ArgumentNullException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents(false, "Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
    }

this compiles fine but as this is a callback so it should really be: (static)

    public static void ClientEndConnect(IAsyncResult iar)
    {
        try
        {
            CommSocket = (Socket)iar.AsyncState;
            CommSocket.EndConnect(iar);

            OnNetworkEvents eventArgs = new OnNetworkEvents(true, "Connected: " + CommSocket.RemoteEndPoint.ToString(), string.Empty);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
        catch (ArgumentNullException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents(false, "Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
    )

but when i do this i get a bunch of errors like:

Error 1 An object reference is required for the non-static field, method, or property 'NietzscheBattleships.NetworkHelper.CommSocket'

due to my lack of knowledge in C# im unable to make sense of these errors. please help me understand.

im reading up on what is static but your comments would help clearing up my confusion also.

Answer 1

CommSocket must be static as well if you are trying to access/manipulate it from a static method.

Answer 2

Why should a callback be static?

You get the specified error because you are accessing CommSocket which is a member of the class.

Just leave your callback non-static and everything will be fine.

You can get more information about what is the static keyword here.

Answer 3

You are referencing 'this' inside the callback, this is only valid to instance members.

Is there any reason why you think your callback has to be static ?