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   源码介绍

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c# 测试网络是否稳定 通过ping ip又有异常就会记录下来

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
//using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Forms;
using System.Net.NetworkInformation;
using System.Text.RegularExpressions;

namespace GeiIPState
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        string M_TbxStatus = "";
        string GetIP = "";
        string path = Application.StartupPath   "\\IP_Status_Log.txt";
        public void tbx_getIP_Leave()
        {
            try
            {
                int _int = GetIP.IndexOf("w");
                if (_int >= 0 && GetIP.Substring(_int, 3) == "www")
                {
                    if (IsUrl(GetIP.Trim()))
                    {
                        this.lab_prompt.Text = "";
                        return;
                    }
                    else
                    {
                        this.lab_prompt.Text = "格式有误！";
                        return;
                    }
                }
                else
                {
                    if (IPCheck(GetIP.Trim()))
                    {
                        this.lab_prompt.Text = "";
                        return;
                    }
                    else
                        this.lab_prompt.Text = "格式有误！";
                }
            }
            catch (Exception)
            {
                this.lab_prompt.Text = "格式有误！";
                return;
                throw;
            }

        }

        public bool IPCheck(string IP)
        {
            try
            {
                string regformat = @"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$";
                Regex regex = new Regex(regformat, RegexOptions.IgnoreCase);
                return regex.IsMatch(IP);
            }
            catch (Exception)
            {
                this.lab_prompt.Text = "格式有误！";
                throw;
            }           
        }

        public bool IsUrl(string str_url)
        {
            try
            {
                return System.Text.RegularExpressions.Regex.IsMatch(str_url, @"(?<![\w@] )((http|https)://)?(www.)?[a-z0-9\.] (\.(com|net|cn|com\.cn|com\.net|net\.cn))(/[^\s\n]*)?");
            }
            catch (Exception)
            {
                this.lab_prompt.Text = "格式有误！";
                throw;
            }
           
        }
        public  void Ping(string ip)
        {
            try
            {
                System.Net.NetworkInformation.Ping p = new System.Net.NetworkInformation.Ping();
                System.Net.NetworkInformation.PingReply reply = p.Send(ip);
                String Show_IP_States = "";
                if (reply.Status.ToString() == "Success")
                {
                    if (is_ip_status)
                    {
                        Show_IP_States = GetIP   "：  时间【"   reply.RoundtripTime   "ms】 TTL【"   reply.Options.Ttl   "】";
                        Clear_Itme(Show_IP_States);
                    }
                    return;
                }
                else
                    if (reply.Status.ToString() == "DestinationHostUnreachable")
                    {
                        M_TbxStatus = "["   DateTime.Now   "] ："   GetIP   " 【无法访问目标主机】";
                        Show_IP_States= GetIP   "：  【无法访问目标主机】";
                        Writer_Log(M_TbxStatus);
                        if (is_ip_status)
                        {
                            Show_IP_States = GetIP   "：  【无法访问目标主机】";
                            Clear_Itme(Show_IP_States);
                        }
                    }
                    else
                    {
                        M_TbxStatus = "["   DateTime.Now   "] ："   GetIP   " 【请求超时】";
                        Writer_Log(M_TbxStatus);
                        if (is_ip_status)
                        {
                            Show_IP_States = GetIP   "：  【请求超时】";
                            Clear_Itme(Show_IP_States);
                        }
                    }
            }
            catch (Exception)
            {
                this.lab_prompt.Text = "格式有误！";
                return;
                throw;
            }
        }

        public void Clear_Itme(String Show_IP_States)
        {
            if (lbx_IPStatus.Items.Count == 50)
                lbx_IPStatus.Items.Clear();
            lbx_IPStatus.Items.Add(Show_IP_States);
        }
        private void btn_start_Click(object sender, EventArgs e)
        {
            {
                GetIP = this.tbx_getIP.Text.ToLower();
                if ( timer1.Enabled == false && GetIP.Trim()!="")
                {
                    tbx_getIP_Leave();
                    if (this.lab_prompt.Text == "")
                    {
                        btn_start.Text = "停止";
                        timer1.Enabled = true;
                        timer1.Start();
                    }
                }
                else if ( timer1.Enabled == true)
                {
                    if (timer1.Enabled == true)
                    {
                        btn_start.Text = "开始";
                        timer1.Enabled = false;
                    }
 
                }
            }
        }
        public void Writer_Log(String _log)
        {
            try
            {
                StreamWriter SW;
                if (!File.Exists(path))
                {
                    SW = File.CreateText(path);
                    SW.Close();
                }
                else
                {
                    FileStream fs = new FileStream(path, FileMode.Append);
                    StreamWriter sw = new StreamWriter(fs);
                    sw.WriteLine(_log);
                    sw.Close();
                    fs.Close();

                }
            }
            catch (Exception)
            {
                return;
                throw;
            }
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            try
            {
                if (timer1.Enabled == true)
                    Ping(GetIP.Trim());
                backgroundWorker1.RunWorkerAsync();
            }
            catch (Exception)
            {
                return;
                throw;
            }
        }

        private void tbn_stop_Click(object sender, EventArgs e)
        {
            StreamWriter SW;
            if (File.Exists(path))
            {
                System.Diagnostics.Process.Start(path);
            }
            else
            {
                SW = File.CreateText(path);
                SW.Close();
            }
        }
        bool is_ip_status = true;
        private void ckbn_IPStatus_CheckedChanged(object sender, EventArgs e)
        {
            if (ckbn_IPStatus.Checked == true)
                is_ip_status = true;
            else
                is_ip_status = false;
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            timer1.Enabled = true;
            timer1.Start();
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {

        }
    }
}