// This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it displays
// the ItemID of the node.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
using System;
using OpcLabs.EasyOpc;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.DataAccess.AddressSpace;
using OpcLabs.EasyOpc.OperationModel;
namespace DocExamples.DataAccess.Xml
{
class BrowseLeaves
{
public static void Main1Xml()
{
// Instantiate the client object.
var client = new EasyDAClient();
DANodeElementCollection leafElements;
try
{
ServerDescriptor serverDescriptor = "http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx";
leafElements = client.BrowseLeaves(serverDescriptor, "Static/Analog Types");
}
catch (OpcException opcException)
{
Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
return;
}
foreach (DANodeElement leafElement in leafElements)
Console.WriteLine($"LeafElements(\"{leafElement.Name}\").ItemId: {leafElement.ItemId}");
}
// Example output:
//
//LeafElements("Int").ItemId: Static/Analog Types/Int
//LeafElements("Double").ItemId: Static/Analog Types/Double
//LeafElements("Int[]").ItemId: Static/Analog Types/Int[]
//LeafElements("Double[]").ItemId: Static/Analog Types/Double[]
}
}
# This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it displays
# the ItemID of the node.
#
# 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:
leafElements = IEasyDAClientExtension.BrowseLeaves(client, ServerDescriptor('http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx'), DANodeDescriptor('Static/Analog Types'))
except OpcException as opcException:
print('*** Failure: ' + opcException.GetBaseException().Message, sep='')
exit()
for leafElement in leafElements:
print('LeafElements("', leafElement.Name, '").ItemId: ', leafElement.ItemId, sep='')
# Example output:
#
#LeafElements("Int").ItemId: Static/Analog Types/Int
#LeafElements("Double").ItemId: Static/Analog Types/Double
#LeafElements("Int[]").ItemId: Static/Analog Types/Int[]
#LeafElements("Double[]").ItemId: Static/Analog Types/Double[]
' This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it displays
' the ItemID of the node.
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
Imports OpcLabs.EasyOpc
Imports OpcLabs.EasyOpc.DataAccess
Imports OpcLabs.EasyOpc.DataAccess.AddressSpace
Imports OpcLabs.EasyOpc.OperationModel
Namespace DataAccess.Xml
Partial Friend Class BrowseLeaves
Shared Sub Main1Xml()
Dim client = New EasyDAClient()
Dim leafElements As DANodeElementCollection
Try
Dim serverDescriptor As ServerDescriptor = "http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx"
leafElements = client.BrowseLeaves(serverDescriptor, "Static/Analog Types")
Catch opcException As OpcException
Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message)
Exit Sub
End Try
For Each leafElement In leafElements
Console.WriteLine($"LeafElements(""{leafElement.Name}"").ItemId: {leafElement.ItemId}")
Next leafElement
End Sub
' Example output
'
'LeafElements("Int").ItemId: Static/Analog Types/Int
'LeafElements("Double").ItemId: Static/Analog Types/Double
'LeafElements("Int[]").ItemId: Static/Analog Types/Int[]
'LeafElements("Double[]").ItemId: Static/Analog Types/Double[]
End Class
End Namespace
