QuickOPC User's Guide and Reference
Installed Examples - WPF - WpfEasyOpcUADemo

This is a source of the WPF Demo application for OPC-UA that ships with QuickOPC. The application shows the most important product functions, including event-based subscriptions.

using OpcLabs.EasyOpc.DataAccess;
using System;
using System.Windows;

namespace OpcDAQualityDecoder
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1
    {
        public Window1()
        {
            InitializeComponent();
        }

        // ReSharper disable InconsistentNaming
        private void DecodeButton_Click(object sender, RoutedEventArgs e)
        // ReSharper restore InconsistentNaming
        {
            int value;
            try
            {
                value = Convert.ToUInt16(valueTextBox.Text);
            }
            catch (FormatException formatException)
            {
                MessageBox.Show(formatException.Message);
                qualityChoiceStringTextBox.Text = "";
                statusStringTextBox.Text = "";
                limitStringTextBox.Text = "";
                return;
            }
            catch (OverflowException overflowException)
            {
                MessageBox.Show(overflowException.Message);
                qualityChoiceStringTextBox.Text = "";
                statusStringTextBox.Text = "";
                limitStringTextBox.Text = "";
                return;
            }
            var quality = new DAQuality(value);

            qualityChoiceStringTextBox.Text = quality.QualityChoiceBitField.ToString();
            statusStringTextBox.Text = quality.StatusBitField.ToString();
            limitStringTextBox.Text = quality.LimitBitField.ToString();
        }
    }
}

 

See Also

Conceptual