using?System;
using?System.Windows.Forms;
using?Opc;
using?Opc.Da;
using?OpcCom;
namespace?opcTest
{
????public?partial?class?Form1?:?Form
????{
????????private?Opc.Da.Server?m_server?=?null;//定義數據存取服務器
????????private?Opc.Da.Subscription?subscription?=?null;//定義組對象（訂閱者）
????????private?Opc.Da.SubscriptionState?state?=?null;//定義組（訂閱者）狀態，相當于OPC規范中組的參數
????????private?Opc.IDiscovery?m_discovery?=?new?ServerEnumerator（）;//定義枚舉基于COM服務器的接口，用來搜索所有的此類服務器。

????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????textBox1.Text?=?“192.168.1.5“;
????????????button2.Enabled?=?false;
????????????button3.Enabled?=?false;
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????//查詢服務器
????????????try
????????????{
????????????????Opc.Server[]?servers?=?m_discovery.GetAvailableServers（Specification.COM_DA_20?textBox1.Text?null）;
????????????????if?（servers?!=?null）
????????????????{
????????????????????foreach?（Opc.Da.Server?server?in?servers）
????????????????????{
????????????????????????comboBox1.Items.Add（server.Name）;
????????????????????}
????????????????}
????????????????comboBox1.SelectedIndex?=?0;
????????????????listBox1.Items.Add（“查詢服務器成功.請選擇OPC進行連接“）;

????????????????button1.Enabled?=?false;
????????????????button2.Enabled?=?true;
????????????}
????????????catch?（Exception?ex）
????????????{

????????????????listBox1.Items.Add（ex.Message）;
????????????}


????????}


????????private?void?button2_Click（object?sender?EventArgs?e）
????????{
????????????//連接
????????????if?（button2.Text==“釋放“）
????????????{
????????????????//結束：釋放各資源
????????????????button2.Text?=?“連接“;
????????????????listBox1.Items.Add（“釋放成功.不能進行讀取數據請重新連接“）;
????????????????button3.Enabled?=?false;
????????????????try
????????????????{
????????????????????subscription.Dispose（）;//強制.NET資源回收站回收該subscription的所有資源。?????????
????????????????????m_server.Disconnect（）;//斷開服務器連接
????????????????}
????????????????catch?（Exception?ex）
????????????????{
????????????????????listBox1.Items.Add（ex.Message）;
????????????????}
????????????}
????????????else
????????????{
????????????????try
????????????????{
????????????????????Opc.Server[]?servers?=?m_discovery.GetAvailableServers（Specification.COM_DA_20?textBox1.Text?null）;
????????????????????if?（servers?!=?null）
????????????????????{
????????????????????????foreach?（Opc.Da.Server?server?in?servers）
????????????????????????{
????????????????????????????if?（String.Compare（server.Name?comboBox1.Text?true）?==?0）//為true忽略大小寫
????????????????????????????{
????????????????????????????????m_server?=?server;//建立連接。
????????????????????????????????break;
????????????????????????????}
????????????????????????}
????????????????????}
????????????????}
????????????????catch?（Exception?ex）
????????????????{

????????????????????listBox1.Items.Add（ex.Message）;
????????????????????return;
??????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????6294??2013-05-10?12:13??bank_pepole\Backup\OPC_Client\Form1.cs

?????文件??????10059??2013-05-10?12:13??bank_pepole\Backup\OPC_Client\Form1.Designer.cs

?????文件???????5814??2013-05-10?12:13??bank_pepole\Backup\OPC_Client\Form1.resx

?????文件???????5975??2013-05-10?13:33??bank_pepole\Backup\OPC_Client\OPC_Client.csproj

?????文件????????564??2013-05-10?13:33??bank_pepole\Backup\OPC_Client\OPC_Client.csproj.user

?????文件????????468??2012-12-12?14:43??bank_pepole\Backup\OPC_Client\Program.cs

?????文件???????1383??2013-05-10?12:09??bank_pepole\Backup\OPC_Client\Properties\AssemblyInfo.cs

?????文件???????2864??2012-12-12?14:43??bank_pepole\Backup\OPC_Client\Properties\Resources.Designer.cs

?????文件???????5612??2012-12-12?14:43??bank_pepole\Backup\OPC_Client\Properties\Resources.resx

?????文件???????1092??2012-12-12?14:43??bank_pepole\Backup\OPC_Client\Properties\Settings.Designer.cs

?????文件????????249??2012-12-12?14:43??bank_pepole\Backup\OPC_Client\Properties\Settings.settings

?????文件????????920??2013-05-10?12:14??bank_pepole\Backup\OPC_Client.sln

????..A..H.?????13824??2013-05-14?15:27??bank_pepole\Backup\OPC_Client.v11.suo

?????文件???50449456??2014-11-10?15:29??bank_pepole\document\dotNetFx40_Full_x86_x64.exe

?????文件?????899584??2015-11-19?22:40??bank_pepole\document\OPC?Core?Components?2.00?SDK?2.30.msi

?????文件????1278001??2015-11-05?15:19??bank_pepole\document\Win7系統下的OPC運行配置.pdf

?????文件???????4608??2016-01-05?16:32??bank_pepole\OpcEnumLib.dll

?????文件?????200704??2005-11-25?17:07??bank_pepole\OpcNetApi.Com.dll

?????文件?????225280??2005-11-25?17:07??bank_pepole\OpcNetApi.dll

?????文件???????9216??2008-07-09?16:50??bank_pepole\OpcRcw.Cmd.dll

?????文件???????6656??2008-07-09?16:50??bank_pepole\OpcRcw.Comn.dll

?????文件??????20992??2008-07-09?16:50??bank_pepole\OpcRcw.Da.dll

?????文件??????15872??2008-07-09?16:50??bank_pepole\OpcRcw.Dx.dll

?????文件??????12800??2008-07-09?16:50??bank_pepole\OpcRcw.Hda.dll

?????文件????????474??2016-06-23?14:56??bank_pepole\OPC_Client\app.config

?????文件????????474??2016-06-23?14:56??bank_pepole\OPC_Client\bin\Debug\app.config

?????文件??????????0??2015-11-29?08:56??bank_pepole\OPC_Client\bin\Debug\log\log.txt

?????文件??????26773??2015-12-04?09:47??bank_pepole\OPC_Client\bin\Debug\log\log_2015-12-04.txt

?????文件??????12006??2015-12-08?16:25??bank_pepole\OPC_Client\bin\Debug\log\log_2015-12-08.txt

?????文件???????4624??2015-12-09?12:36??bank_pepole\OPC_Client\bin\Debug\log\log_2015-12-09.txt

............此處省略106個文件信息