Internet Magic (Proxy Server) Windows Application

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

namespace internet_magic
{
    public partial class ipmonlist : Form
    {
        public int flag=0;
        public ipmonlist(int i)
        {
            InitializeComponent();
            flag = i;
        }
        
        private void button1_Click(object sender, EventArgs e)
        {
            string dir = Environment.CurrentDirectory;
            if (!dir.Substring(dir.Length - 1, 1).Equals(@"\"))
                dir += @"\";
            int_magic ipm = new int_magic(dir + "IPmon.xml");
            if (System.IO.File.Exists(ipm.ipmon.File))
                ipm.ipmon.LoadData();
            string[] keys;
            string[] pcn;
            if (flag == 0)
            {
                keys = ipm.ipmon.ipnList.Keys;
                pcn = ipm.ipmon.ipnList.ipname;
            }
            else
            {
                keys = ipm.ipmon.ipxList.Keys;
                pcn = ipm.ipmon.ipxList.ipname;
            }
            int k = 0;
            if (keys.Length > 1)
                k = keys.Length - 1;
            for (int i = 0; i < keys.Length; i++)
            {
                this.id.Text += keys[i] + "  " + pcn[i] + ",\t\n";
            }
        }
    }
}