public static void Main1()
{
// Instantiate the client object
// In order to use event pull, you must set a non-zero queue capacity upfront.
var easyUAClient = new EasyUAClient {
PullDataChangeNotificationQueueCapacity = 1000
};
Console.WriteLine("Subscribing...");
easyUAClient.SubscribeDataChange(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;i=10853",
1000);
Console.WriteLine("Processing data change events for 1 minute...");
int endTick = Environment.TickCount + 60 * 1000;
do
{
EasyUADataChangeNotificationEventArgs eventArgs = easyUAClient.PullDataChangeNotification(2 * 1000);
if (eventArgs != null)
{
// Handle the notification event
Console.WriteLine(eventArgs);
}
} while (Environment.TickCount < endTick);
}
static void easyUAClient_DataChangeNotification(object sender, EasyUADataChangeNotificationEventArgs e)
{
// Your code would do the processing here
}
static void easyUAClient_DataChangeNotification(object sender, EasyUADataChangeNotificationEventArgs e)
{
// Display value
// Remark: Production code would check e.Exception before accessing e.AttributeData.
Console.WriteLine("{0}: {1}", e.Arguments.NodeDescriptor, e.AttributeData.Value);
}
static void easyUAClient_DataChangeNotification(object sender, EasyUADataChangeNotificationEventArgs e)
{
// Remark: Production code would check e.Exception before accessing e.AttributeData.
Console.WriteLine(e.AttributeData.Value);
}