BrowseBranches Method (

Browse for child branches. Specify machine name, and server class.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ElementsNotNullAttribute()>
<NotNullAttribute()>
Function BrowseBranches( _
   ByVal machineName As String, _
   ByVal serverClass As String, _
   ByVal parentItemId As String _
) As DANodeElementCollection

'Usage
 
Dim instance As _EasyDAClient
Dim machineName As String
Dim serverClass As String
Dim parentItemId As String
Dim value As DANodeElementCollection
 
value = instance.BrowseBranches(machineName, serverClass, parentItemId)

[ElementsNotNull()]
[NotNull()]
DANodeElementCollection BrowseBranches( 
   string machineName,
   string serverClass,
   string parentItemId
)

[ElementsNotNull()]
[NotNull()]
DANodeElementCollection^ BrowseBranches( 
   String^ machineName,
   String^ serverClass,
   String^ parentItemId
)

Parameters

machineName: Name of the machine (empty string for local computer).
serverClass: Contains ProgID of the OPC server to browse.
parentItemId: ID of the parent branch to be browsed (empty string for root)

Return Value

The method returns a keyed collection of OpcLabs.EasyOpc.DataAccess.AddressSpace.DANodeElement values, each containing information about a particular branch found. The keys of the keyed collection are the names of the branches.

Exceptions

Exception	Description
System.Exception	An error has occurred during application execution.

Example

COM

VBScript

Rem This example shows how to obtain all branches at the root of the address space. For each branch, it displays whether 
Rem it may have child nodes.

Option Explicit

Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.DataAccess.EasyDAClient")
On Error Resume Next
Dim BranchElements: Set BranchElements = Client.BrowseBranches("", "OPCLabs.KitServer.2", "")
If Err.Number <> 0 Then
    WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description
    WScript.Quit
End If
On Error Goto 0

Dim BranchElement: For Each BranchElement In BranchElements
    WScript.Echo "BranchElements(""" & BranchElement.Name & """).HasChildren: " & BranchElement.HasChildren
Next

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

_EasyDAClient Interface
_EasyDAClient Members

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