How to connect at fingerprint device using VB.Net?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using zkemkeeper;
using System.Text;
using System.Windows.Forms;


namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            int count = 0;
           zkemkeeper.CZKEMClass axczkem1 = new zkemkeeper.CZKEMClass();
            bool bIsConnected = false;
            string ip = "192.168.140.254";//write here IP Address of your biomatric m/c
            int port = 4370;
            bIsConnected = axczkem1.Connect_Net(ip, port);
            if (bIsConnected == true)
            {
                MessageBox.Show("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)
                            {
                                MessageBox.Show(b.ToString() + " hour: " + f + "  Min: " + g);
                                MessageBox.Show(k.ToString() + " " + l.ToString());

                            }
                        }

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

            }
            else
                MessageBox.Show("cannot Connection!!!");

            axczkem1.Disconnect();

        }
    }
}