BrowseOne Method (IEasyDAClientExtension2)

Browses the nodes in OPC DA server's address space. Starts from the specified node, and returns information about child nodes found.

Browses the nodes in server's address space, given a browse arguments object.

Syntax

[Extension()]
[NotNull()]
public static DANodeElementCollectionResult BrowseOne( 
   IEasyDAClient client,
   DABrowseArguments browseArguments
)

[Extension()]
[NotNull()]
public:
static DANodeElementCollectionResult^ BrowseOne( 
   IEasyDAClient^ client,
   DABrowseArguments^ browseArguments
)

'Declaration
 
<ExtensionAttribute()>
<NotNullAttribute()>
Public Shared Function BrowseOne( _
   ByVal client As IEasyDAClient, _
   ByVal browseArguments As DABrowseArguments _
) As DANodeElementCollectionResult

'Usage
 
Dim client As IEasyDAClient
Dim browseArguments As DABrowseArguments
Dim value As DANodeElementCollectionResult
 
value = IEasyDAClientExtension2.BrowseOne(client, browseArguments)

Parameters

client

The client object that will perform the operation.

This is typically the OpcLabs.EasyOpc.DataAccess.EasyDAClient object.

The value of this parameter cannot be null (Nothing in Visual Basic).

browseArguments

Holds arguments needed to browse OPC DA server nodes.

The value of this parameter cannot be null (Nothing in Visual Basic).

Return Value

This method never returns null (Nothing in Visual Basic).

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.

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.

Remarks

The server(s) can be local or can be remotely accessed via DCOM.

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

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

IEasyDAClientExtension2 Class
IEasyDAClientExtension2 Members

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