C#一个完整的执行ping命令的.cs文件，可编译成.dll文件用

 class PingMachine
    {
        #region 变量

        /// <summary>
        /// IP
        /// </summary>
        private string m_strIP = String.Empty;

        /// <summary>
        /// 次数
        /// </summary>
        private int m_iRetry = 0;

        /// <summary>
        /// 0:success 1:failure
        /// </summary>
        private string m_strMode = String.Empty;

        /// <summary>
        /// 0:success 1:failure
        /// </summary>
        public string Mode
        {
            get
            {
                return m_strMode;
            }
        }
        #endregion

        #region 构造方法
        // ************************************************************************
        /// <summary>
        /// 构造方法

        /// </summary>
        /// <param name="argIPAddress"></param>
        /// <param name="argRetry"></param>
        // ************************************************************************
        public PingMachine(string argIPAddress, int argRetry)
        {
            m_strIP = argIPAddress;
            m_iRetry = argRetry;
        }
        #endregion

        #region Ping
        // ************************************************************************
        /// <summary>
        /// Ping
        /// </summary>
        /// <param name="argRow"></param>
        // ************************************************************************
        public void RetryPingInit()
        {
            bool bPing = false;
            for (int iNum = 0; iNum < m_iRetry; iNum++)
            {
                bPing = GetPingResult(m_strIP);
                 if (bPing)
                {
                    // 0:success 1:failure
                    m_strMode = "0";
                    return;
                }
            }
            m_strMode = "1";
        }

        // ************************************************************************
        /// <summary>
        /// Ping機器
        /// </summary>
        /// <param name="argMachineIP">機器IP</param>
        /// <returns>true:success,false:failure</returns>
        // ************************************************************************
        private bool GetPingResult(string argMachineIP)
        {
            Process proc = new Process();
            proc.StartInfo.CreateNoWindow = true;
            proc.StartInfo.UseShellExecute = false;
            proc.StartInfo.RedirectStandardOutput = true;

            proc.StartInfo.FileName = @"ping.exe";

            proc.StartInfo.Arguments = " -n 1 " + argMachineIP;

            proc.Start();

            string output = proc.StandardOutput.ReadToEnd();

            if (output.Contains("Request timed out") || output.Contains("Unknown host"))
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        #endregion
    }