EasyDAClient

UnsubscribeAllItems

// See https://aka.ms/new-console-template for more information
using OpcLabs.EasyOpc;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.DataAccess.OperationModel;
 
Console.WriteLine("Hello, World!");
 
var timer = new System.Timers.Timer(1000)
{
    AutoReset = false,
    Enabled = true
};
 
timer.Elapsed += async (e, t) =>
{
    timer.Stop();
 
    try
    {
        var client = new EasyDAClient();
 
        client.SubscribeMultipleItems
            (
                new EasyDAItemSubscriptionArguments[]
                {
                    new EasyDAItemSubscriptionArguments
                    (
                        "",
                        "CoDeSys.OPC.DA",
                        "variable",
                        10000,
                        null
                    )
                }
            );
 
        var rp = new DAReadParameters() { DataSource = DADataSource.Device };
        var sd = new ServerDescriptor() { MachineName = "", ServerClass = "CoDeSys.OPC.DA" };
        var id = new DAItemDescriptor() { ItemId = "variable" };
        var result = client.ReadItem(sd, id, rp);
 
        Console.WriteLine(result.Value);
 
        client.UnsubscribeAllItems();
        client.Dispose();
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.ToString());
    }
    finally
    {
        timer.Start();
    }
};
 
Console.ReadLine();