#region Ping 返回true则代表可以连接成功        public bool Ping(string remoteHost)        {            bool Flag = false;            Process proc = new Process();            try            {                proc.StartInfo.FileName = "cmd.exe";                proc.StartInfo.UseShellExecute = false;                proc.StartInfo.RedirectStandardInput = true;                proc.StartInfo.RedirectStandardOutput = true;                proc.StartInfo.RedirectStandardError = true;                proc.StartInfo.CreateNoWindow = true;                proc.Start();                string dosLine = @"ping -n 1 " + remoteHost;                proc.StandardInput.WriteLine(dosLine);                proc.StandardInput.WriteLine("exit");                while (!proc.HasExited)                {                    proc.WaitForExit(500);                }                string pingResult = proc.StandardOutput.ReadToEnd().Replace("Request timed out", "无法访问目标主机");                if (pingResult.IndexOf("无法访问目标主机") == -1)                {                    Flag = true;                }                proc.StandardOutput.Close();            }            catch (Exception ex)            {            }            finally            {                proc.Close();                proc.Dispose();            }            return Flag;        }        #endregion

        #region Connect 连接局域网 返回true则代表可以连接成功        public bool Connect(string remoteHost, string userName, string passWord)        {            bool Flag = false;            Process proc = new Process();            try            {                proc.StartInfo.FileName = "cmd.exe";                proc.StartInfo.UseShellExecute = false;                proc.StartInfo.RedirectStandardInput = true;                proc.StartInfo.RedirectStandardOutput = true;                proc.StartInfo.RedirectStandardError = true;                proc.StartInfo.CreateNoWindow = true;                proc.Start();                proc.StandardInput.WriteLine("net use * /del /y");  //中断开所有连接                string dosLine = @"net use \\" + remoteHost + " " + passWord + " " + " /user:" + userName + ">NUL";                proc.StandardInput.WriteLine(dosLine);                proc.StandardInput.WriteLine("exit");                while (!proc.HasExited)                {                    proc.WaitForExit(1000);                }                string errormsg = proc.StandardError.ReadToEnd();                proc.StandardError.Close();                if (String.IsNullOrEmpty(errormsg))                {                    Flag = true;                }            }            catch (Exception ex)            { }            finally            {                proc.Close();                proc.Dispose();            }            return Flag;        }        #endregion