C# 单机网络监听 实例源码

【实例截图】

【核心代码】

  private void btnStart_Click(object sender, EventArgs e)
        {
            //开始抓取数据包
            if (btnStart.Text == "开始抓取")
            {
                //循环抓取每个网卡的数据包
                for (int i = 0; i < packetMonitor.Length; i )
                {
                    if (cmbIpList.SelectedIndex == 0)
                    {
                        try
                        {
                            //第i个开始抓取
                            packetMonitor[i].begainMonitor();
                        }
                        catch
                        {
                            MessageBox.Show("内部错误，请联系管理员");
                        }
                    }
                    else
                    {
                        try
                        {
                            //抓取指定的Ip
                            packetMonitor[cmbIpList.SelectedIndex - 1].begainMonitor();
                        }
                        catch
                        {
                            MessageBox.Show("内部错误，请联系管理员");
                        }
                    }
                    btnStart.Text = "停止抓取";
                    toolStripStatusLabel1.Text = "开始监测所有端口";
                }     
            }
            //停止抓取
            else
            {
                for (int i = 0; i < packetMonitor.Length; i )
                {
                    packetMonitor[i].Stop();
                }
                btnStart.Text = "开始抓取";
                toolStripStatusLabel1.Text = "停止监测";
            }
       
        }