在官网下载安装DataMan设置工具，连接扫码枪后进行设置曝光，焦距等...

在该路径中C:\Program Files (x86)\Cognex\DataMan\DataMan Software v6.1.10_SR3，找到Cognex.DataMan.SDK.PC.dll 文件，在项目中添加该文件引用

在类中添加引用：using Cognex.DataMan.SDK;

//申明连接对象
EthSystemConnector myConn;
DataManSystem _system;
//连接方法
private void btnConnect_Click(object sender, RoutedEventArgs e)
        {

            try
            {
                  //设置ip
                IPAddress deviceIP = IPAddress.Parse(textBox1.Text.Trim());
                myConn = new EthSystemConnector(deviceIP);
                _system = new DataManSystem(myConn);
                //设置扫描类型，图片，文字等
                ResultTypes requested_result_types = ResultTypes.ReadString|         
                      ResultTypes.Image | ResultTypes.ImageGraphics;
                // 读取文字事件
                _system.ReadStringArrived += _system_ReadStringArrived;
                //获取图像事件
                _system.ImageArrived += _system_ImageArrived;
                _system.Connect();
                _system.SetResultTypes(requested_result_types);

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

       private void _system_ReadStringArrived(object sender, ReadStringArrivedEventArgs args)
        {
            string str = args.ReadString;
        }
private void _system_ImageArrived(object sender, ImageArrivedEventArgs args)
        {
           Image img = args.Image;
        }

断开连接

private void button1_Click(object sender, RoutedEventArgs e)
        {
            if (_system != null)
            {

                _system.Disconnect();
            }
        }

触发

private void btnTrigger_Click(object sender, RoutedEventArgs e)
        {
            if (_system != null)
            {
                _system.SendCommand("TRIGGER ON");
            }

        }

最简单的连接触发与关闭，只用到一个dll，更多属性和事件就先不说了