} // end Trace
public void ActivateSession(bool sync)
{
System.Console.WriteLine();
if (sync)
{
int result = this.m_daSession.Connect(true, true, new ExecutionOptions());
if (ResultCode.FAILED(result))
{
System.Console.WriteLine(" Session activate failed!");
}
} // end if
else
{
m_daSession.Connect(true, true, m_executionOptions);
m_executionOptions.ExecutionContext++;
} // end else
} // end ActivateSession
} // end Terminate
public int InitializeDaObjects()
{
int connectResult = (int)EnumResultCode.E_FAIL;
m_executionOptions = new ExecutionOptions();
m_executionOptions.ExecutionType = EnumExecutionType.ASYNCHRONOUS;
m_executionOptions.ExecutionContext = 0;
m_itemList = new MyDaItem[6];
m_itemIds = new string[] { "maths.sin", "time.local.second", "increment.UI1 array", "increment.BSTR", "secure.I2", "IOP.static.I1 array" };
try
{
// TODO add your server URL here
// this is the server url for Softing OPCToolbox Demo Server
// first choice is COM-DA
string url = "opcda:///Softing.OPCToolboxDemo_ServerDA.1/{2E565242-B238-11D3-842D-0008C779D775}";
//uncomment if you need an XML-DA access
// string url = "http://localhost:8079/OPC/DA";
m_daSession = new MyDaSession(url);
if (!m_daSession.Valid)
{
return(connectResult);
}
m_daSubscription = new MyDaSubscription(1000, m_daSession);
if (!m_daSubscription.Valid)
{
return(connectResult);
}
m_daItem1 = new MyDaItem("maths.sin", m_daSubscription);
if (!m_daItem1.Valid)
{
return(connectResult);
}
m_itemList[0] = m_daItem1;
m_daItem2 = new MyDaItem("time.local.second", m_daSubscription);
if (!m_daItem2.Valid)
{
return(connectResult);
}
m_itemList[1] = m_daItem2;
m_daItem3 = new MyDaItem("increment.UI1 array", m_daSubscription);
if (!m_daItem3.Valid)
{
return(connectResult);
}
m_itemList[2] = m_daItem3;
m_daItem4 = new MyDaItem("increment.BSTR", m_daSubscription);
if (!m_daItem4.Valid)
{
return(connectResult);
}
m_itemList[3] = m_daItem4;
m_daItem5 = new MyDaItem("secure.I2", m_daSubscription);
if (!m_daItem5.Valid)
{
return(connectResult);
}
m_itemList[4] = m_daItem5;
m_daItem6 = new MyDaItem("IOP.static.I1 array", m_daSubscription);
if (!m_daItem6.Valid)
{
return(connectResult);
}
m_itemList[5] = m_daItem6;
connectResult = m_daSession.Connect(true, false, m_executionOptions);
}
catch (Exception exc)
{
GetApplication().Trace(
EnumTraceLevel.ERR,
EnumTraceGroup.USER,
"OpcClient::InitializaDaObjects",
exc.ToString());
} // end try...catch
return(connectResult);
} // end InitializeDaObjects