C# Ping IP地址通不通

C# Ping IP地址通不通

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

namespace PingIpAddress
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
      
        private void Form1_Load(object sender, EventArgs e)
        {
           
           
        }
        private Ping pingSender = new Ping();
        private string strIP = "";
        private void button1_Click(object sender, EventArgs e)
        {
            strIP = txtIP.Text;
            PingOptions pingOption = new PingOptions();
            pingOption.DontFragment = true;

            string data = "sendData:goodgoodgoodgoodgoodgood";
            byte[] buffer = Encoding.ASCII.GetBytes(data);
            int timeout = 120;
            PingReply reply = pingSender.Send(strIP, timeout, buffer);
            if (reply.Status == IPStatus.Success)
            {
                MessageBox.Show("能ping通 ");
            }
            else
            {
                MessageBox.Show("ping不通");
            }
        }
    }
}

using  System;
using  System.Collections.Generic;
using  System.Windows.Forms;
using  System.Net;
using  System.Net.Sockets;
using  System.Threading;
using  System.Text;
using  OSSDOM.CMT.ConfigData;
using  System.Net;
using  System.Net.NetworkInformation;

namespace  OSSDOM.CMT.CommonUse
{
    public class PingServer
    {
        
        private IPEndPoint EPServer = null;
        public PingServer()
        {
            try
            {
                EPServer = new IPEndPoint(IPAddress.Parse(MakeOptionDatas.MakeOptionDataInstance.proxy.strProxyIP), int.Parse(MakeOptionDatas.MakeOptionDataInstance.proxy.strProxyPort));
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + " " + ex.StackTrace);
            }
        }
        //连接
        private Ping pingSender = new Ping(); 
        public bool ServerConnected()
        {
            try
            {
                PingOptions pingOption = new PingOptions();
                pingOption.DontFragment = true;

                string data = "sendData";
                byte[] buffer = Encoding.ASCII.GetBytes(data);
                int timeout = 120;
                PingReply reply = pingSender.Send(EPServer.Address, timeout, buffer);
                if (reply.Status == IPStatus.Success)
                {
                    //MessageBox.Show("能ping通 ");
                    return true;
                }
                else
                {
                    //MessageBox.Show("ping不通");
                    return false;
                }
                
                
            }
            catch
            {
                return false;
            }
        }
        //断开
        public void Disconnect()
        {
            
        }
    }
}