GetApplicationElement Method (_EasyUAClientServerApplication)

Gets the OPC UA registration information for this application.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<NotNullAttribute()>
Function GetApplicationElement() As UAApplicationElement

'Usage
 
Dim instance As _EasyUAClientServerApplication
Dim value As UAApplicationElement
 
value = instance.GetApplicationElement()

[NotNull()]
UAApplicationElement GetApplicationElement()

[NotNull()]
UAApplicationElement^ GetApplicationElement();

Return Value

Returns the application element describing how the application is configured to register itself in OPC UA ecosystem.

Exceptions

Exception Description

Exception	Description
System.ArgumentNullException	A `null` reference (`Nothing` in Visual Basic) is passed to a method that does not accept it as a valid argument. This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.
OpcLabs.EasyOpc.UA.OperationModel.UAException	The OPC UA operation has failed. This operation exception in uniformly used to allow common handling of various kinds of errors. The System.Exception.InnerException always contains information about the actual error cause. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.

System.ArgumentNullException

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

OpcLabs.EasyOpc.UA.OperationModel.UAException

The OPC UA operation has failed. This operation exception in uniformly used to allow common handling of various kinds of errors. The System.Exception.InnerException always contains information about the actual error cause.

This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.

Example

.NET

// Shows how to get the OPC UA registration information for this application.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .

using System;
using OpcLabs.EasyOpc.UA.Application;
using OpcLabs.EasyOpc.UA.Application.Extensions;
using OpcLabs.EasyOpc.UA.Discovery;

namespace UADocExamples.Application._IEasyUAClientServerApplication
{
    class GetApplicationElement
    {
        public static void Main1()
        {
            // Obtain the application interface.
            EasyUAApplication application = EasyUAApplication.Instance;

            // Get the OPC UA registration information for this application.
            UAApplicationElement applicationElement = application.GetApplicationElement();

            // Display results
            Console.WriteLine("Application element:");
            Console.WriteLine("  Application name: {0}", applicationElement.ApplicationName);
            Console.WriteLine("  Application type: {0}", applicationElement.ApplicationType);
            Console.WriteLine("  Application URI string: {0}", applicationElement.ApplicationUriString);
            Console.WriteLine("  Discovery URI strings: {0}", applicationElement.DiscoveryUriStrings);
            Console.WriteLine("  Product URI string: {0}", applicationElement.ProductUriString);
        }
    }
}

# Shows how to get the OPC UA registration information for this application.
#
# 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 System import *
from OpcLabs.EasyOpc.UA.Application import *
from OpcLabs.EasyOpc.UA.Application.Extensions import *
from OpcLabs.EasyOpc.UA.Discovery import *


# Obtain the application interface.
application = EasyUAApplication.Instance

# Get the OPC UA registration information for this application.
applicationElement = IEasyUAClientServerApplicationExtension.GetApplicationElement(application)

# Display results.
print('Application element:')
print('  Application name: ', applicationElement.ApplicationName, sep='')
print('  Application type: ', Enum.Format(UAApplicationTypes, applicationElement.ApplicationType, 'G'), sep='')
print('  Application URI string: ', applicationElement.ApplicationUriString, sep='')
print('  Discovery URI strings: ', applicationElement.DiscoveryUriStrings, sep='')
print('  Product URI string: ', applicationElement.ProductUriString, sep='')

print()
print('Finished.')

' Shows how to get the OPC UA registration information for this application.
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .

Imports Microsoft.Extensions.DependencyInjection
Imports OpcLabs.EasyOpc.UA
Imports OpcLabs.EasyOpc.UA.Application
Imports OpcLabs.EasyOpc.UA.Application.ComTypes
Imports OpcLabs.EasyOpc.UA.Application.Extensions

Namespace Application._IEasyUAClientServerApplication
    Friend Class GetApplicationElement
        Public Shared Sub Main1()
            ' Obtain the application interface.
            Dim application As EasyUAApplication = EasyUAApplication.Instance

            ' Get the OPC UA registration information for this application.
            Dim applicationElement = application.GetApplicationElement()

            ' Display results
            Console.WriteLine("Application element:")
            Console.WriteLine("  Application name: {0}", applicationElement.ApplicationName)
            Console.WriteLine("  Application type: {0}", applicationElement.ApplicationType)
            Console.WriteLine("  Application URI string: {0}", applicationElement.ApplicationUriString)
            Console.WriteLine("  Discovery URI strings: {0}", applicationElement.DiscoveryUriStrings)
            Console.WriteLine("  Product URI string: {0}", applicationElement.ProductUriString)
        End Sub
    End Class
End Namespace

Object Pascal

// Shows how to get the OPC UA registration information for this application.
//
// Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .

class procedure GetApplicationElement.Main;
var
  Application: TEasyUAApplication;
  ApplicationElement: _UAApplicationElement;
begin
  // Obtain the application interface.
  Application := TEasyUAApplication.Create(nil);

  // Get the OPC UA registration information for this application.
  ApplicationElement := Application.GetApplicationElement;

  // Display results
  WriteLn('Application element:');
  WriteLn('  Application name: ', ApplicationElement.ApplicationName);
  WriteLn('  Application type: ', ApplicationElement.ApplicationType);
  WriteLn('  Application URI string: ', ApplicationElement.ApplicationUriString);
  WriteLn('  Discovery URI string: ', ApplicationElement.DiscoveryUriString);
  WriteLn('  Product URI string: ', ApplicationElement.ProductUriString);
end;

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

_EasyUAClientServerApplication Interface
_EasyUAClientServerApplication Members

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