Examples - User Interface - OPC Unified Architecture data dialog with multi-select

C#
Python (.NET)

// This example shows how to let the user browse for multiple OPC-UA data nodes (data variables or properties). 

using System;
using System.Linq;
using System.Windows.Forms;
using OpcLabs.EasyOpc.UA.Forms.Browsing;

namespace UAFormsDocExamples._UADataDialog
{
    static partial class ShowDialog
    {
        public static void MultiSelect(IWin32Window owner)
        {
            var dataDialog = new UADataDialog
            {
                EndpointDescriptor = { UrlString = "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer" },
                // or "http://opcua.demo-this.com:51211/UA/SampleServer" (currently not supported)
                // or "https://opcua.demo-this.com:51212/UA/SampleServer/"
                MultiSelect = true,
                UserPickEndpoint = true
            };

            DialogResult dialogResult = dataDialog.ShowDialog(owner);
            if (dialogResult != DialogResult.OK)
                return;

            // Display results
            MessageBox.Show(owner, 
                String.Join(Environment.NewLine, dataDialog.NodeElements.Select(element => element.ToString())));
        }
    }
}

# This example shows how to let the user browse for multiple OPC-UA data nodes (data variables or properties).

# The QuickOPC package is needed. Install it using "pip install opclabs_quickopc".
import opclabs_quickopc

# Import .NET namespaces.
from System.Windows.Forms import *
from OpcLabs.EasyOpc.UA.Forms.Browsing import *


dataDialog = UADataDialog()
dataDialog.EndpointDescriptor.UrlString = 'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer'
# or 'http://opcua.demo-this.com:51211/UA/SampleServer' (currently not supported)
# or 'https://opcua.demo-this.com:51212/UA/SampleServer/'
dataDialog.MultiSelect = True
dataDialog.UserPickEndpoint = True

dialogResult = dataDialog.ShowDialog()
print(dialogResult)
if dialogResult != DialogResult.OK:
    exit()

# Display results.
for nodeElement in dataDialog.NodeElements:
    print(nodeElement)

print()
print('Finished.')

Conceptual

OPC-UA Data Dialog