form1.cs

SimCDIR

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

namespace SimCDIR
{
    public partial class Form1 : Form
    {
        string ip;
        int[,] mask = new int[3, 32] { { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
        int[,] ip_test = new int[3, 32] { { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } };
        int[] ip_get2 = new int[32];
        int[,] JugdeResult = new int[3, 32];
        int ip_part;
        int Way;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string ip1, ip2, ip3, ip4;
            string str = "";
            int length;
            Way = 0;

            ip1 = P1.Text;
            ip_part = Convert.ToInt32(ip1);
            ip1 = Convert.ToString(ip_part, 2);
            length = ip1.Length;

            for (int i = 0; i < 8; i++)
            {
                if (i < 8 - length)
                    str = str.Insert(i, "0");
                else
                {
                    str = str.Insert(i, Convert.ToString(ip1[i - (8 - length)]));
                }
            }
            ip1 = str;

            str = "";
            ip2 = P2.Text;
            ip_part = Convert.ToInt32(ip2);
            ip2 = Convert.ToString(ip_part, 2);
            length = ip2.Length;

            for (int i = 0; i < 8; i++)
            {
                if (i < 8 - length)
                    str = str.Insert(i, "0");
                else
                {
                    str = str.Insert(i, Convert.ToString(ip2[i - (8 - length)]));
                }
            }
            ip2 = str;

            str = "";
            ip3 = P3.Text;
            ip_part = Convert.ToInt32(ip3);
            ip3 = Convert.ToString(ip_part, 2);
            length = ip3.Length;

            for (int i = 0; i < 8; i++)
            {
                if (i < 8 - length)
                    str = str.Insert(i, "0");
                else
                {
                    str = str.Insert(i, Convert.ToString(ip3[i - (8 - length)]));
                }
            }
            ip3 = str;

            str = "";
            ip4 = P4.Text;
            ip_part = Convert.ToInt32(ip4);
            ip4 = Convert.ToString(ip_part, 2);
            length = ip4.Length;

            for (int i = 0; i < 8; i++)
            {
                if (i < 8 - length)
                    str = str.Insert(i, "0");
                else
                {
                    str = str.Insert(i, Convert.ToString(ip4[i - (8 - length)]));
                }
            }
            ip4 = str;

            str = ip1 + ip2 + ip3 + ip4;

            for (int i = 0; i < 32; i++)
            {
                ip_get2[i] = Convert.ToInt32(str[i]);
                ip_get2[i] = ip_get2[i] - 48;
            }

            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 32; j++)
                {
                    JugdeResult[i, j] = (ip_get2[j]) & (mask[i, j]);
                    if (JugdeResult[i, j] != ip_test[i, j])
                        break;
                    else if (j == 31)
                    {
                        Way = i + 1;
                        tMessageWay.Text = Convert.ToString(Way);
                    }
                }
            }

            if (Way == 0)
            {
                MessageBox.Show("该地址未进行过分配，转向默认路由！");
            }
        }
    }
}