Examples - User Interface - OPC UA endpoint dialog

.NET

// This example shows how to let the user browse for an OPC-UA server endpoint.

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

namespace UAFormsDocExamples._UAEndpointDialog
{
    static class ShowDialog
    {
        public static void Main1(IWin32Window owner)
        {
            var endpointDialog = new UAEndpointDialog
            {
                DiscoveryHost = "opcua.demo-this.com"
            };

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

            // Display results
            MessageBox.Show(owner, endpointDialog.DiscoveryElement.ToString());
        }
    }
}

# This example shows how to let the user browse for an OPC-UA server endpoint.

using namespace OpcLabs.EasyOpc.UA.Forms.Browsing

# The path below assumes that the current directory is [ProductDir]/Examples-NET/PowerShell/Windows .
Add-Type -Path "../../../Components/Opclabs.QuickOpc/net472/OpcLabs.EasyOpcForms.dll"

# Instantiate the dialog object.
$endpointDialog = New-Object UAEndpointDialog
$endpointDialog.DiscoveryHost = "opcua.demo-this.com"

$dialogResult = $endpointDialog.ShowDialog()
if ($dialogResult -ne [System.Windows.Forms.DialogResult]::OK) {
    return
}

# Display results
Write-Host $endpointDialog.DiscoveryElement

# This example shows how to let the user browse for an OPC-UA server endpoint.

# 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 *


endpointDialog = UAEndpointDialog()
endpointDialog.DiscoveryHost = 'opcua.demo-this.com'

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

# Display results.
print(endpointDialog.DiscoveryElement)

print('Finished.')

COM

// This example shows how to let the user browse for an OPC-UA server endpoint.

#include "stdafx.h"    // Includes "QuickOpc.h", and other commonly used files
#include "ShowDialog.h"

namespace _UAEndpointDialog
{
    void ShowDialog1::Main()
    {
        // Initialize the COM library
        CoInitializeEx(NULL, COINIT_MULTITHREADED);
        {
            // 
            _UAEndpointDialogPtr EndpointDialogPtr(__uuidof(UAEndpointDialog));

            //
            EndpointDialogPtr->DiscoveryHost = L"opcua.demo-this.com";

            // 
            DialogResult dialogResult = EndpointDialogPtr->ShowDialog(NULL);
            _tprintf(_T("%d\n"), dialogResult);

            if (dialogResult == 1/*OK*/)
            {
                // Display results
                _tprintf(_T("%s\n"), (LPCTSTR)CW2CT(EndpointDialogPtr->DiscoveryElement->ToString));
            }
        }
         // Release all interface pointers BEFORE calling CoUninitialize()
        CoUninitialize();
    }
}

// This example shows how to let the user browse for an OPC-UA server endpoint.

class procedure ShowDialog.Main;
var
  EndpointDialog: UAEndpointDialog;
begin
  // Instantiate the dialog object
  EndpointDialog := CoUAEndpointDialog.Create;

  EndpointDialog.DiscoveryHost := 'opcua.demo-this.com';

  EndpointDialog.ShowDialog(nil);
  // IMPROVE: check the dialog result

  // Display results
  WriteLn(EndpointDialog.DiscoveryElement.ToString);
end;

// This example shows how to let the user browse for an OPC-UA server endpoint.

class procedure ShowDialog.Main;
var
  EndpointDialog: OpcLabs_EasyOpcForms_TLB._UAEndpointDialog;
  DialogResult: System_Windows_Forms_TLB.DialogResult;
begin
  // Instantiate the dialog object
  EndpointDialog := CoUAEndpointDialog.Create;

  EndpointDialog.DiscoveryHost := 'opcua.demo-this.com';

  DialogResult := EndpointDialog.ShowDialog(nil);
  WriteLn(DialogResult);

  if DialogResult <> DialogResult_OK then
    Exit;

  // Display results
  WriteLn(EndpointDialog.DiscoveryElement.ToString);
end;

Rem This example shows how to let the user browse for an OPC-UA server endpoint.

Private Sub ShowDialog_Main_Command_Click()
    OutputText = ""

    Dim EndpointDialog As New UAEndpointDialog
    EndpointDialog.DiscoveryHost = "opcua.demo-this.com"
    
    Dim DialogResult
    DialogResult = EndpointDialog.ShowDialog
    
    OutputText = OutputText & DialogResult & vbCrLf
    If DialogResult <> 1 Then   ' OK
        Exit Sub
    End If
    
    ' Display results
    OutputText = OutputText & EndpointDialog.DiscoveryElement & vbCrLf
End Sub

Rem This example shows how to let the user browse for an OPC-UA server endpoint.

Option Explicit

Const DialogResult_OK = 1

Dim EndpointDialog: Set EndpointDialog = CreateObject("OpcLabs.EasyOpc.UA.Forms.Browsing.UAEndpointDialog")
EndpointDialog.DiscoveryHost = "opcua.demo-this.com"

Dim dialogResult: dialogResult = EndpointDialog.ShowDialog
WScript.Echo dialogResult

If dialogResult <> DialogResult_OK Then
    WScript.Quit
End If

' Display results
WScript.Echo EndpointDialog.DiscoveryElement

Conceptual

OPC-UA Endpoint Dialog