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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Timers;
using System.Windows.Forms;
using Opc.Net;

namespace Opc.Net.Demo
{
    public partial class FrmMain : Form
    {
        public FrmMain()
        {
            InitializeComponent();
        }

        private OpcManager opcManager;
        private System.Timers.Timer opcTimer;
        private int[] pErrors;
        private Dictionary<int, object> items;
        /// <summary>
        /// 写入采煤机位置数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            items = new Dictionary<int, object>();
            items.Add(2, textBox2.Text);
            opcManager.Write(items, 1, pErrors);
        }

        private void FrmMain_Load(object sender, EventArgs e)
        {
            opcManager = new OpcManager(AppDomain.CurrentDomain.BaseDirectory "\\Opc.config.xml");
            opcManager.OnReadCompleted  = new EventHandler<OpcDaCustomAsyncEventArgs>(opcManager_OnReadCompleted);

            opcTimer = new System.Timers.Timer()
            {
                Interval = 100,
                AutoReset = true,
                Enabled = true
            };
            opcTimer.Elapsed  = new ElapsedEventHandler(opcTimer_Elapsed);
        }

        void opcTimer_Elapsed(object sender, ElapsedEventArgs e)
        {
            opcManager.Read();
        }

        void opcManager_OnReadCompleted(object sender, OpcDaCustomAsyncEventArgs e)
        {
            Invoke((ThreadStart)(() =>
            {

                if (OpcHelper.ShowValue(e, 3) != null)
                {
                    textBox1.Text = OpcHelper.ShowValue(e, 3).ToString();
                }
            }));
        }
    }
}