///鄙视那些拿代码当宝贝的人，鄙视那些拿源码换源码的人，鄙视那些自私的人。
///别人看到你的代码，你能死啊？对你有多大威胁啊？强烈鄙视～～～
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Collections;
using OPCAutomation;
namespace OPC测试通过
{
public partial class MainFrom : Form
{
public MainFrom()
{
InitializeComponent();
}
#region 私有变量
/// <summary>
/// OPCServer Object
/// </summary>
OPCServer KepServer;
/// <summary>
/// OPCGroups Object
/// </summary>
OPCGroups KepGroups;
/// <summary>
/// OPCGroup Object
/// </summary>
OPCGroup KepGroup;
/// <summary>
/// OPCItems Object
/// </summary>
OPCItems KepItems;
/// <summary>
/// OPCItem Object
/// </summary>
OPCItem KepItem;
/// <summary>
/// 主机IP
/// </summary>
string strHostIP = "";
/// <summary>
/// 主机名称
/// </summary>
string strHostName = "";
/// <summary>
/// 连接状态
/// </summary>
bool opc_connected = false;
/// <summary>
/// 客户端句柄
/// </summary>
int itmHandleClient = 0;
/// <summary>
/// 服务端句柄
/// </summary>
int itmHandleServer = 0;
#endregion
#region 方法
/// <summary>
/// 枚举本地OPC服务器
/// </summary>
private void GetLocalServer()
{
//获取本地计算机IP,计算机名称
IPHostEntry IPHost = Dns.Resolve(Environment.MachineName);
if (IPHost.AddressList.Length > 0)
{
strHostIP = IPHost.AddressList[0].ToString();
}
else
{
return;
}
//通过IP来获取计算机名称，可用在局域网内
IPHostEntry ipHostEntry = Dns.GetHostByAddress(strHostIP);
strHostName=ipHostEntry.HostName.ToString();
//获取本地计算机上的OPCServerName
try
{
KepServer = new OPCServer();
object serverList = KepServer.GetOPCServers(strHostName);
foreach (string turn in (Array)serverList)
{
cmbServerName.Items.Add(turn);
}
cmbServerName.SelectedIndex = 0;
btnConnServer.Enabled = true;
}
catch(Exception err)
{
MessageBox.Show("枚举本地OPC服务器出错："+err.Message,"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Warning);
}
}
/// <summary>
/// 创建组
/// </summary>
private bool CreateGroup()
{
try
{
KepGroups = KepServer.OPCGroups;
KepGroup = KepGroups.Add("OPCDOTNETGROUP");
SetGroupProperty();
KepGroup.DataChange += new DIOPCGroupEvent_DataChangeEventHandler(KepGroup_DataChange);
KepGroup.AsyncWriteComplete += new DIOPCGroupEvent_AsyncWriteCompleteEventHandler(KepGroup_AsyncWriteComplete);
KepItems = KepGroup.OPCItems;
}
catch (Exception err)
{
MessageBox.Show("创建组出现错误："+err.Message,"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Warning);
return false;
}
return true;
}
/// <summary>
/// 设置组属性
/// </summary>
private void SetGroupProperty()
{
KepServer.OPCGroups.DefaultGroupIsActive =Convert.ToBoolean(txtGroupIsActive.Text);
KepServer.OPCGroups.DefaultGroupDeadband = Convert.ToInt32(txtGroupDeadband.Text);
KepGroup.UpdateRate = Convert.ToInt32(txtUpdateRate.Text);
KepGroup.IsActive = Convert.ToBoolean(txtIsActive.Text);
KepGroup.IsSubscribed =Convert.ToBoolean(txtIsSubscribed.Text);
}
/// <summary>
/// 列出OPC服务器中所有节点
/// </summary>
/// <param name="oPCBrowser"></param>
private void RecurBrowse(OPCBrowser oPCBrowser)
{
//展开分支
oPCBrowser.ShowBranches();
//展开叶子
oPCBrowser.ShowLeafs(true);
foreach (object turn in oPCBrowser)
{
listBox1.Items.Add(turn.ToString());
}
}
/// <summary>
/// 获取服务器信息，并显示在窗体状态栏上
/// </summary>
private void GetServerInfo()
{
tsslServerStartTime.Text ="开始时间:"+ KepServer.StartTime.ToString()+" ";
tsslversion.Text ="版本:"+ KepServer.MajorVersion.ToString() + "." + KepServer.MinorVersion.ToString()+"."+KepServer.BuildNumber.ToString();
}
/// <summary>
/// 连接OPC服务器
/// </summary>
/// <param name="remoteServerIP">OPCServerIP</param>
/// <param name="remoteServerName">OPCServer名称</param>
private bool ConnectRemoteServer(string remoteServerIP, string remoteServerName)
{
try
{
KepServer.Connect(remoteServerName, remoteServerIP);
if (KepServer.ServerState == (int)OPCServerState.OPCRunning)
{
tsslServerState.Text = "已连接到-" + KepServer.ServerName + " ";
}
else
{
//这里你可以根据返回的状态来自定义显示信息，请查看自动化接口API文档
tsslServerState.Text = "状态：" + KepServer.ServerState.ToString() + " ";
}
}
catch (Exception err)
{
MessageBox.Show("连接远程服务器出现错误：" + err.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return false;
}
return true;
}
#endregion
#region 事件
/// <summary>
/// 写入TAG值时执行的事件
/// </summary>
/// <param name="TransactionID"></param>
/// <param name="NumItems"></param>
/// <param name="ClientHandles"></param>
/// <param name="Errors"></param>
void KepGroup_AsyncWriteComplete(int TransactionID, int NumItems, ref Array ClientHandles, ref Array Errors)
{
lblState.Text = "";
for (int i = 1; i <= NumItems; i++)
{
lblState.Text += "Tran:" + TransactionID.ToString() + " CH:" + ClientHandles.GetValue(i).ToString() + " Error:" + Errors.GetValue(i).ToString();
}
}
/// <summary>
/// 每当项数据有变化时执行的事件
/// </summary>
/// <param name="TransactionID">处理ID</param>
/// <param name="NumItems">项个数</param>
/// <param name="ClientHandles">项客户端句柄</param>
/// <param name="ItemValues">TAG值</param>
/// <param name="Qualities">品质</param>
/// <param name="TimeStamps">时间戳</param>
void KepGroup_DataChange(int TransactionID, int NumItems, ref Array ClientHandles, ref Array ItemValues, ref Array Qualities, ref Array TimeStamps)
{
//为了测试，所以加了控制台的输出，来查看事物ID号
//Console.WriteLine("********"+TransactionID.ToString()+"*********");
for (int i = 1; i <= NumItems; i++)
{
this.txtTagValue.Text = ItemValues.GetValue(i).ToString();
this.txtQualities.Text = Qualities.GetValue(i).ToString();
this.txtTimeStamps.Text = TimeStamps.GetValue(i).ToString();
}
}
/// <summary>
/// 选择列表项时处理的事情
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (itmHandleClient != 0)
{
this.txtTagValue.Text = "";
this.txtQualities.Text ="";
this.txtTimeStamps.Text = "";
Array Errors;
OPCItem bItem = KepItems.GetOPCItem(itmHandleServer);
//注：OPC中以1为数组的基数
int[] temp = new int[2] { 0, bItem.ServerHandle };
Array serverHandle = (Array)temp;
//移除上一次选择的项
KepItems.Remove(KepItems.Count, ref serverHandle, out Errors);
}
itmHandleClient = 1234;
KepItem = KepItems.AddItem(listBox1.SelectedItem.ToString(), itmHandleClient);
itmHandleServer = KepItem.ServerHandle;
}
catch(Exception err)
{
//没有任何权限的项，都是OPC服务器保留的系统项，此处可不做处理。
itmHandleClient = 0;
txtTagValue.Text = "Error ox";
txtQualities.Text = "Error ox";
txtTimeStamps.Text = "Error ox";
MessageBox.Show("此项为系统保留项:"+err.Message,"提示信息");
}
}
/// <summary>
/// 载入窗体时处理的事情
/// </summary>
private void MainFrom_Load(object sender, EventArgs e)
{
GetLocalServer();
}
/// <summary>
/// 关闭窗体时处理的事情
/// </summary>
private void MainFrom_FormClosing(object sender, FormClosingEventArgs e)
{
if (!opc_connected)
{
return;
}
if (KepGroup != null)
{
KepGroup.DataChange -= new DIOPCGroupEvent_DataChangeEventHandler(KepGroup_DataChange);
}
if (KepServer != null)
{
KepServer.Disconnect();
KepServer = null;
}
opc_connected = false;
}
/// <summary>
/// 【按钮】设置
/// </summary>
private void btnSetGroupPro_Click(object sender, EventArgs e)
{
SetGroupProperty();
}
/// <summary>
/// 【按钮】连接ＯＰＣ服务器
/// </summary>
private void btnConnLocalServer_Click(object sender, EventArgs e)
{
try
{
if (!ConnectRemoteServer(txtRemoteServerIP.Text,cmbServerName.Text))
{
return;
}
btnSetGroupPro.Enabled = true;
opc_connected = true;
GetServerInfo();
RecurBrowse(KepServer.CreateBrowser());
if (!CreateGroup())
{
return;
}
}
catch (Exception err)
{
MessageBox.Show("初始化出错：" + err.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
/// <summary>
/// 【按钮】写入
/// </summary>
private void btnWrite_Click(object sender, EventArgs e)
{
OPCItem bItem = KepItems.GetOPCItem(itmHandleServer);
int[] temp = new int[2] { 0, bItem.ServerHandle };
Array serverHandles=(Array)temp;
object[] valueTemp = new object[2] {"",txtWriteTagValue.Text };
Array values=(Array)valueTemp;
Array Errors;
int cancelID;
KepGroup.AsyncWrite(1,ref serverHandles,ref values,out Errors, 2009,out cancelID);
//KepItem.Write(txtWriteTagValue.Text);//这句也可以写入，但并不触发写入事件
GC.Collect();
}
#endregion
}
}
本文转自tiasys博客园博客，原文链接：http://www.cnblogs.com/tiasys/archive/2009/08/30/1556908.html，如需转载请自行联系原作者
