Examples - OPC XML-DA - Browse for branches

// This example shows how to obtain all branches at the root of the address space. For each branch, it displays whether 
// it may have child nodes.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .

using System;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.DataAccess.AddressSpace;
using OpcLabs.EasyOpc.OperationModel;

namespace DocExamples.DataAccess.Xml
{
    class BrowseBranches
    {
        public static void Main1Xml()
        {
            // Instantiate the client object.
            var client = new EasyDAClient();
            DANodeElementCollection branchElements;
            try
            {
                branchElements = client.BrowseBranches("http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx");
            }
            catch (OpcException opcException)
            {
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
                return;
            }

            foreach (DANodeElement branchElement in branchElements)
                Console.WriteLine($"BranchElements(\"{branchElement.Name}\").HasChildren: {branchElement.HasChildren}");
        }


        // Example output:
        //
        //BranchElements("Static").HasChildren: True
        //BranchElements("Dynamic").HasChildren: True
    }
}

# This example shows how to obtain all branches at the root of the address space. For each branch, it displays whether 
# it may have child nodes.
#
# Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
# OPC client and subscriber examples in Python on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-Python .
# The QuickOPC package is needed. Install it using "pip install opclabs_quickopc".
import opclabs_quickopc

# Import .NET namespaces.
from OpcLabs.EasyOpc import *
from OpcLabs.EasyOpc.DataAccess import *
from OpcLabs.EasyOpc.DataAccess.AddressSpace import *
from OpcLabs.EasyOpc.OperationModel import *

# Instantiate the client object.
client = EasyDAClient()

try:
    branchElements = IEasyDAClientExtension.BrowseBranches(client, ServerDescriptor('http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx'))
except OpcException as opcException:
    print('*** Failure: ' + opcException.GetBaseException().Message, sep='')
    exit()

for branchElement in branchElements:
    print('BranchElements("', branchElement.Name, '").HasChildren: ', branchElement.HasChildren, sep='')

# Example output:
#
#BranchElements("Static").HasChildren: True
#BranchElements("Dynamic").HasChildren: True

' This example shows how to obtain all branches at the root of the address space. For each branch, it displays whether 
' it may have child nodes.
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .

Imports OpcLabs.EasyOpc.DataAccess
Imports OpcLabs.EasyOpc.DataAccess.AddressSpace
Imports OpcLabs.EasyOpc.OperationModel

Namespace DataAccess.Xml
    Partial Friend Class BrowseBranches
        Shared Sub Main1Xml()
            Dim client = New EasyDAClient()

            Dim branchElements As DANodeElementCollection
            Try
                branchElements = client.BrowseBranches("http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx")
            Catch opcException As OpcException
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message)
                Exit Sub
            End Try

            For Each branchElement In branchElements
                Console.WriteLine($"BranchElements(""{branchElement.Name}"").HasChildren: {branchElement.HasChildren}")
            Next branchElement

        End Sub

        ' Example output
        '
        'BranchElements("Static").HasChildren: True
        'BranchElements("Dynamic").HasChildren: True

    End Class
End Namespace

QuickOPC supports OPC XML-DA also on Linux and macOS.

Examples - OPC Data Access

Examples - OPC Unified Architecture

Conceptual