Examples - User Interface - OPC UA generic browsing dialog

.NET

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

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

namespace UAFormsDocExamples._UABrowseDialog
{
    static partial class ShowDialog
    {
        public static void Main1(IWin32Window owner)
        {
            var browseDialog = new UABrowseDialog();
            browseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host = "opcua.demo-this.com";
            browseDialog.Mode.AnchorElementType = UAElementType.Host;

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

            // Display results
            MessageBox.Show(owner, browseDialog.Outputs.CurrentNodeElement.NodeElement.ToString());
        }
    }
}

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

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.
$browseDialog = New-Object UABrowseDialog
$browseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host = "opcua.demo-this.com"
$browseDialog.Mode.AnchorElementType = [UAElementType]::Host

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

# Display results
Write-Host $browseDialog.Outputs.CurrentNodeElement.NodeElement

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

# 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 *


browseDialog = UABrowseDialog()
browseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host = 'opcua.demo-this.com'
browseDialog.Mode.AnchorElementType = UAElementType.Host

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

# Display results.
print(browseDialog.Outputs.CurrentNodeElement.NodeElement)

print('Finished.')

COM

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

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

namespace _UABrowseDialog
{
    void ShowDialog::Main()
    {
        // Initialize the COM library
        CoInitializeEx(NULL, COINIT_MULTITHREADED);
        {
            // 
            _UABrowseDialogPtr BrowseDialogPtr(__uuidof(UABrowseDialog));

            //
            BrowseDialogPtr->InputsOutputs->CurrentNodeDescriptor->EndpointDescriptor->Host = L"opcua.demo-this.com";
            BrowseDialogPtr->Mode->AnchorElementType = UAElementType_Host;

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

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

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

class procedure ShowDialog.Main;
var
  BrowseDialog: UABrowseDialog;
begin
  // Instantiate the dialog object
  BrowseDialog := CoUABrowseDialog.Create;
  BrowseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host := 'opcua.demo-this.com';
  BrowseDialog.Mode.AnchorElementType := UAElementType_Host;

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

  // Display results
  WriteLn(BrowseDialog.Outputs.CurrentNodeElement.NodeElement.ToString);
end;

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

class procedure ShowDialog.Main;
var
  BrowseDialog: OpcLabs_EasyOpcForms_TLB._UABrowseDialog;
  DialogResult: System_Windows_Forms_TLB.DialogResult;
begin
  // Instantiate the dialog object
  BrowseDialog := CoUABrowseDialog.Create;
  BrowseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host := 'opcua.demo-this.com';
  BrowseDialog.Mode.AnchorElementType := UAElementType_Host;

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

  if DialogResult <> DialogResult_OK then
    Exit;

  // Display results
  WriteLn(BrowseDialog.Outputs.CurrentNodeElement.NodeElement.ToString);
end;

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

$UAElementType_Host = 1;

$BrowseDialog = new COM("OpcLabs.EasyOpc.UA.Forms.Browsing.UABrowseDialog");
$BrowseDialog->InputsOutputs->CurrentNodeDescriptor->EndpointDescriptor->Host = "opcua.demo-this.com";
$BrowseDialog->Mode->AnchorElementType = $UAElementType_Host;

printf("%d\n", $BrowseDialog->ShowDialog);

// Display results
printf("%s\n", $BrowseDialog->Outputs->CurrentNodeElement->NodeElement);

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

# The Python for Windows (pywin32) extensions package is needed. Install it using "pip install pypiwin32".
# CAUTION: We now recommend using Python.NET package instead. Full set of examples with Python.NET is available!
import win32com.client

UAElementType_Host = 1

browseDialog = win32com.client.Dispatch('OpcLabs.EasyOpc.UA.Forms.Browsing.Specialized.UABrowseDialog') 
browseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host = "opcua.demo-this.com"
browseDialog.Mode.AnchorElementType = UAElementType_Host

print(browseDialog.ShowDialog())

# Display results
print(browseDialog.Outputs.CurrentNodeElement.NodeElement)

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

Private Sub ShowDialog_Main_Command_Click()
    OutputText = ""

    Dim BrowseDialog As New UABrowseDialog
    BrowseDialog.InputsOutputs.CurrentNodeDescriptor.endpointDescriptor.Host = "opcua.demo-this.com"
    
    Dim DialogResult
    DialogResult = BrowseDialog.ShowDialog
    
    OutputText = OutputText & DialogResult & vbCrLf
    If DialogResult <> 1 Then   ' OK
        Exit Sub
    End If
    
    ' Display results
    OutputText = OutputText & BrowseDialog.outputs.CurrentNodeElement.NodeElement & vbCrLf
End Sub

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

Option Explicit

Const DialogResult_OK = 1

Const UAElementType_Host = 1

Dim BrowseDialog: Set BrowseDialog = CreateObject("OpcLabs.EasyOpc.UA.Forms.Browsing.UABrowseDialog")
BrowseDialog.InputsOutputs.CurrentNodeDescriptor.EndpointDescriptor.Host = "opcua.demo-this.com"
BrowseDialog.Mode.AnchorElementType = UAElementType_Host

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

If dialogResult <> DialogResult_OK Then
    WScript.Quit
End If

' Display results
WScript.Echo BrowseDialog.Outputs.CurrentNodeElement.NodeElement

Conceptual

Generic OPC-UA Browsing Dialog