C#winform修改IP,dns

 /// 将IP，DNS设置为自动获取
        ///
        private void setDHCP()
        {
            string  _doscmd = "netsh interface ip set address 本地连接 DHCP";
            Process p = new Process();
            p.StartInfo.FileName = "cmd.exe";
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.RedirectStandardInput = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.CreateNoWindow = true;
            p.Start();
            p.StandardInput.WriteLine(_doscmd.ToString());
            _doscmd = "netsh interface ip set dns 本地连接 DHCP";
            p.StandardInput.WriteLine(_doscmd.ToString());
            p.StandardInput.WriteLine("exit");
        }

        ///
        /// 设置IP地址，掩码，网关等
        ///
        private void setIPaddress()
        {
            string _ipaddress = "192.168.111.222";
            string _submask = "255.255.255.0";
            string _gateway = "192.168.111.1";
            string _dns1 = "123.1.11.1";
          
            string  _doscmd = "netsh interface ip set address 本地连接 static " + _ipaddress + " " + _submask + " " + _gateway + " 1";
            Process p = new Process();
            p.StartInfo.FileName = "cmd.exe";
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.RedirectStandardInput = true;
            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.CreateNoWindow = true;
            p.Start();
            p.StandardInput.WriteLine(_doscmd.ToString());
            _doscmd = "netsh interface ip set dns 本地连接 static " + _dns1;
            p.StandardInput.WriteLine(_doscmd.ToString());
                   
            p.StandardInput.WriteLine("exit");
        }