how to catch event

[satiss7pwr]

hey Friends,
I want a simple help from you,
I want a code that how to catch event of finger put on machine and how to catch the signal(message) from fingerprint machine (Like finger is valid or not)
I have a code to connect with fingerprint device as below

int count = 0;
        zkemkeeper.CZKEMClass axczkem1 = new zkemkeeper.CZKEMClass();
        bool bIsConnected = false;
        string ip = "192.168.1.170";//write here IP Address of your biomatric m/c
        int port = 4370;
        bIsConnected = axczkem1.Connect_Net(ip, port);
        if (bIsConnected == true)
        {
            Label1.Text = "Connection established!!!";

            bool ret = axczkem1.ReadAllGLogData(1);
            if (ret)
            {
                int a = 0;
                int b = 0;
                int c = 0;
                int d = 0;
                int ee = 0;
                int f = 0;
                int g = 0;
                int h = 0;
                int i = 0;
                int j = 0;
                int k = 0;
                int l = 0;
                int m = 0;
                int n = 0;
                int o = 0;
                while (axczkem1.GetAllGLogData(1, ref a, ref b, ref c, ref k, ref l, ref d, ref m, ref ee, ref f, ref g))
                {
                    //if (ee == 7 && m == 4 && d == 2011)
                    {
                        count++;
                        //if (b == //any Employee No)
                        //{
                        Label1.Text = b.ToString() + " hour: " + f + "  Min: " + g;
                        //Label1.Text=k.ToString() + " " + l.ToString();

                        //}
                    }

                }
                //MessageBox.Show(count.ToString ());
            }

        }
        else
            Label1.Text = "cannot Connection!!!";

        axczkem1.Disconnect();

But i dont know how to implement further,
Please any one help me
The connection is establish successfully but i dont know about other events like finger putting on machine,catch message sent by machine
Thanks

[debasisdas]

Is the device connected via COM port ?

[satiss7pwr]

via lan cable