// Logs OPC Alarms and Events notifications into an XML file.
using System;
using System.Diagnostics;
using System.Xml;
using System.Xml.Serialization;
using OpcLabs.BaseLib.Runtime.InteropServices;
using OpcLabs.EasyOpc.AlarmsAndEvents;
using OpcLabs.EasyOpc.AlarmsAndEvents.OperationModel;
namespace XmlEventLogger
{
class Program
{
static void Main()
{
ComManagement.Instance.AssureSecurityInitialization();
Console.WriteLine("Starting up...");
var xmlSerializer = new XmlSerializer(typeof(EasyAENotificationEventArgs));
var xmlWriter = XmlWriter.Create("OpcEvents.xml", new XmlWriterSettings
{
Indent = true,
CloseOutput = true
});
// The root element can have any name you need, but the name below also allows reading the log back as .NET array
xmlWriter.WriteStartElement("ArrayOfEasyAENotificationEventArgs");
Console.WriteLine("Logging events for 30 seconds...");
int handle = EasyAEClient.SharedInstance.SubscribeEvents("", "OPCLabs.KitEventServer.2", 100,
(_, eventArgs) =>
{
Debug.Assert(!(eventArgs is null));
Console.Write(".");
xmlSerializer.Serialize(xmlWriter, eventArgs);
});
System.Threading.Thread.Sleep(30 * 1000);
Console.WriteLine();
Console.WriteLine("Shutting down...");
EasyAEClient.SharedInstance.UnsubscribeEvents(handle);
xmlWriter.WriteEndElement(); // not really necessary - XmlWriter would write the end tag for us anyway
xmlWriter.Close();
Console.WriteLine("Finished.");
}
}
}
' Logs OPC Alarms and Events notifications into an XML file.
Imports System.Xml
Imports System.Xml.Serialization
Imports OpcLabs.BaseLib.Runtime.InteropServices
Imports OpcLabs.EasyOpc.AlarmsAndEvents
Imports OpcLabs.EasyOpc.AlarmsAndEvents.OperationModel
Friend Class Program
Shared WithEvents _client As New EasyAEClient
Shared ReadOnly XmlSerializer As New XmlSerializer(GetType(EasyAENotificationEventArgs))
Shared _xmlWriter As XmlWriter
<MTAThread> ' needed for COM security initialization to succeed
Shared Sub Main()
ComManagement.Instance.AssureSecurityInitialization()
Console.WriteLine("Starting up...")
_xmlWriter = XmlWriter.Create("OpcEvents.xml", New XmlWriterSettings With {.Indent = True, .CloseOutput = True})
' The root element can have any name you need, but the name below also allows reading the log back as .NET array
_xmlWriter.WriteStartElement("ArrayOfEasyAENotificationEventArgs")
Console.WriteLine("Logging events for 30 seconds...")
Dim handle As Integer = _client.SubscribeEvents("", "OPCLabs.KitEventServer.2", 100)
Threading.Thread.Sleep(30 * 1000)
Console.WriteLine()
Console.WriteLine("Shutting down...")
_client.UnsubscribeEvents(handle)
_xmlWriter.WriteEndElement() ' not really necessary - XmlWriter would write the end tag for us anyway
_xmlWriter.Close()
Console.WriteLine("Finished.")
End Sub
Private Shared Sub Notification(ByVal sender As Object, ByVal eventArgs As Object) Handles _client.Notification
Debug.Assert(eventArgs IsNot Nothing)
Console.Write(".")
XmlSerializer.Serialize(_xmlWriter, eventArgs)
End Sub
End Class
