OPC Studio User's Guide and Reference
Examples - User Interface - Computer browser dialog

.NET

// This example shows how to let the user browse for computers on the network.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// OPC client and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-CSharp .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

using System.Windows.Forms;
using OpcLabs.BaseLib.Forms.Browsing.Specialized;

namespace UAFormsDocExamples._ComputerBrowserDialog
{
    static class ShowDialog
    {
        public static void Main1(IWin32Window owner)
        {
            var computerBrowserDialog = new ComputerBrowserDialog();

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

            // Display results
            MessageBox.Show(owner, computerBrowserDialog.SelectedName);
        }
    }
}

# This example shows how to let the user browse for computers on the network.
#
# Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
# OPC client and subscriber examples in PowerShell on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-PowerShell .
# Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
# a commercial license in order to use Online Forums, and we reply to every post.

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

$computerBrowserDialog = New-Object OpcLabs.BaseLib.Forms.Browsing.Specialized.ComputerBrowserDialog

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

# Display results
Write-Host $computerBrowserDialog.SelectedName

' This example shows how to let the user browse for computers on the network.
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
' OPC client and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBNET .
' Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
' a commercial license in order to use Online Forums, and we reply to every post.

Imports OpcLabs.BaseLib.Forms.Browsing.Specialized

Namespace UAFormsDocExamples._ComputerBrowserDialog
    Friend Class ShowDialog
        Shared Sub Main1(owner As IWin32Window)
            Dim computerBrowserDialog = New ComputerBrowserDialog()

            Dim dialogResult As DialogResult = computerBrowserDialog.ShowDialog(owner)
            If dialogResult <> DialogResult.OK Then
                Return
            End If

            ' Display results
            MessageBox.Show(owner, computerBrowserDialog.SelectedName)
        End Sub
    End Class
End Namespace

COM

// This example shows how to let the user browse for computers on the network.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

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

namespace _ComputerBrowserDialog
{
    void ShowDialog::Main()
    {
        // Initialize the COM library
        CoInitializeEx(NULL, COINIT_MULTITHREADED);
        {
            // 
            _ComputerBrowserDialogPtr DialogPtr(__uuidof(ComputerBrowserDialog));

            // 
            DialogResult dialogResult = DialogPtr->ShowDialog(NULL);
            _tprintf(_T("%d\n"), dialogResult);
            
            if (dialogResult == 1/*OK*/)
            {
                // Display results
                _tprintf(_T("%s\n"), (LPCTSTR)CW2CT(DialogPtr->SelectedName));
            }
        }
         // Release all interface pointers BEFORE calling CoUninitialize()
        CoUninitialize();
    }
}

// This example shows how to let the user browse for computers on the network.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

class procedure ShowDialog.Main;
var
  Dialog: ComputerBrowserDialog;
begin
  // Instantiate the dialog object
  Dialog := CoComputerBrowserDialog.Create;

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

  WriteLn(Dialog.SelectedName);
end;

// This example shows how to let the user browse for computers on the network.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// OPC client and subscriber examples in Object Pascal (Delphi) on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-OP .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

class procedure ShowDialog.Main;
var
  ComputerBrowserDialog: OpcLabs_BaseLibForms_TLB._ComputerBrowserDialog;
  DialogResult: System_Windows_Forms_TLB.DialogResult;
begin
  // Instantiate the dialog object
  ComputerBrowserDialog := CoComputerBrowserDialog.Create;

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

  if DialogResult <> DialogResult_OK then
    Exit;

  // Display results
  WriteLn(ComputerBrowserDialog.SelectedName);
end;

// This example shows how to let the user browse for computers on the network.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// OPC client and subscriber examples in PHP on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-PHP .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

$Dialog = new COM("OpcLabs.BaseLib.Forms.Browsing.Specialized.ComputerBrowserDialog");
printf("%d\n", $Dialog->ShowDialog);

// Display results
printf("%s\n", $Dialog->SelectedName);

# This example shows how to let the user browse for computers on the network.
#
# 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!
#
# Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
import win32com.client

dialog = win32com.client.Dispatch('OpcLabs.BaseLib.Forms.Browsing.ComputerBrowserDialog') 
print(dialog.ShowDialog())

# Display results
print(dialog.SelectedName)

REM This example shows how to let the user browse for computers on the network.
REM
REM Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
REM OPC client and subscriber examples in Visual Basic on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VB .
REM Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
REM a commercial license in order to use Online Forums, and we reply to every post.

Private Sub ShowDialog_Main_Command_Click()
    OutputText = ""

    Dim Dialog As New ComputerBrowserDialog
    Dim DialogResult
    DialogResult = Dialog.ShowDialog
    
    OutputText = OutputText & DialogResult & vbCrLf
    If DialogResult <> 1 Then   ' OK
        Exit Sub
    End If
    
    ' Display results
    OutputText = OutputText & Dialog.SelectedName & vbCrLf
End Sub

Rem This example shows how to let the user browse for computers on the network.
Rem
Rem Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
Rem OPC client and subscriber examples in VBScript on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBScript .
Rem Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
Rem a commercial license in order to use Online Forums, and we reply to every post.

Option Explicit

Const DialogResult_OK = 1

Dim Dialog: Set Dialog = CreateObject("OpcLabs.BaseLib.Forms.Browsing.Specialized.ComputerBrowserDialog")
Dim dialogResult: dialogResult = Dialog.ShowDialog
WScript.Echo dialogResult

If dialogResult <> DialogResult_OK Then
    WScript.Quit
End If

' Display results
WScript.Echo Dialog.SelectedName

Python

# This example shows how to let the user browse for computers on the network.
#
# 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 .
# Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
# a commercial license in order to use Online Forums, and we reply to every post.
# The QuickOPC package is needed. Install it using "pip install opclabs_quickopc".
import opclabs_quickopc

# Import .NET namespaces.
from OpcLabs.BaseLib.Forms.Browsing.Specialized import *


dialog = ComputerBrowserDialog()
print(dialog.ShowDialog())

# Display results.
print(dialog.SelectedName)

print('Finished.')

 

See Also

Concepts

Computer Browser Dialog (OPC DA usage)
Computer Browser Dialog (OPC A&E)

 

 

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