使用C#开发OPC Server服务器源码解析

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using FKOPCSrvApi;

namespace OPCSrvTest
{
public partial class Form1 : Form
{
OPCSvrHelper _myOPCSvrHelper = null;
Timer timer = new Timer();
bool opcStart = false;
string opcgroupname = "MyOPCSrvGroup"; //OPC组名
string opcServerName = "MyOPCServer2"; //OPC服务器名称
string UUID = "F61323FD-77CE-4AB6-930F-E3E6DFF8BBED"; //OPC服务器的唯一ID
public Form1()
{
InitializeComponent();
timer.Interval = 2000;
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
}

/// <summary>
/// 注册并启动OPC服务器，然后添加OPC组及OPC项
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button_StartOPCSrv_Click(object sender, EventArgs e)
{
string path=System.Windows.Forms.Application.ExecutablePath; //exe的路径
OPCSvrHelper.RegisterOPCSrv(path, UUID, opcServerName);//注册OPC服务器
_myOPCSvrHelper = new OPCSvrHelper();
_myOPCSvrHelper.InitOPCServer(UUID); //初始化启动OPC服务器
//注册OPC Tag值更新事件（由客户端写入）
_myOPCSvrHelper.TagWritedByClientEvt += new TagWritedByClientDelegate(_myOPCSvrHelper_TagWritedByClientEvt);
//添加OPC Tag
for (int i = 0;i<10;i++)
{
string tagName = string.Format("MyTag{0}",i+1);
_myOPCSvrHelper.CreateTag(opcgroupname, tagName, "", true); //创建OPC Tag
}
opcStart = true;
}
/// <summary>
/// 客户端写OPC Tag值更新事件
/// </summary>
/// <param name="TagName">OPC组名.OPCTag名</param>
/// <param name="Value">更新的值</param>
/// <param name="ResultCode">信号质量</param>
void _myOPCSvrHelper_TagWritedByClientEvt(string TagName, object Value, uint ResultCode)
{
//throw new NotImplementedException();
this.Invoke((EventHandler)(delegate
{
label_Info.Text = string.Format("{0}值更新为{1} {2}", TagName, Value,DateTime.Now);
}));
}

/// <summary>
/// 定时更新Tag
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void timer_Tick(object sender, EventArgs e)
{
//throw new NotImplementedException();
if (opcStart && _myOPCSvrHelper != null)
{
for (int i = 0; i < 10; i++)
{
string tagName = string.Format("MyTag{0}", i + 1);
Random rd = new Random();
object val = rd.Next(100);
_myOPCSvrHelper.UpDateTagVal(opcgroupname, tagName, val); //更新OPC Tag
}
}
}
/// <summary>
/// 注销OPC服务器
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button_RemoveOPCSrv_Click(object sender, EventArgs e)
{
if(_myOPCSvrHelper != null)
{
OPCSvrHelper.UnRegisterOPCSrv(UUID, opcServerName);
}
}
/// <summary>
/// 读取Tag的值
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button_Read_Click(object sender, EventArgs e)
{
try
{
if(_myOPCSvrHelper != null)
{
object val = _myOPCSvrHelper.ReadTag(textBox_OPCGroupName.Text,textBox_TagName.Text);
MessageBox.Show(val.ToString());
}
}
catch (System.Exception err)
{
MessageBox.Show(err.Message);
}
}
}
}