Use this. Controller. Logon (the UserInfo. DefaultUser); There is an error

FengTingLe

My code：
using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using ABB.Robotics;

using ABB.Robotics.Controllers;

using ABB.Robotics.Controllers.Discovery;

using ABB.Robotics.Controllers.RapidDomain;

using ABB.Robotics.Controllers.MotionDomain;

namespace _3

{

    public partial class Form1 : Form

    {

        private NetworkScanner scanner = null;

        private Controller controller = null;

        public Form1()

        {

            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            this.scanner = new NetworkScanner();

            this.scanner.Scan();

            ControllerInfo[] controllers = scanner.GetControllers();

            ControllerInfo aControllerInfo = controllers[0];

            if (aControllerInfo.Availability == Availability.Available)

            {

                if (this.controller != null)

                {

                    this.controller.Logoff();

                    this.controller.Dispose();

                    this.controller = null;

                }

                this.controller = ControllerFactory.CreateFrom(aControllerInfo);

                this.controller.Logon(UserInfo.DefaultUser);

            }

            else

            {

                MessageBox.Show("控制器不可用");

            }
      }
}

John_Verheij

I tried to run your code and in my case it works without any problems. Did you import the correct references? And as check you have to open RobotStudio with a system.