TopicPrefixHead Property (_UADataSetSubscriptionDescriptor)

The head of the prefix used in topic name construction.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<NotNullAttribute()>
Property TopicPrefixHead As String

'Usage
 
Dim instance As _UADataSetSubscriptionDescriptor
Dim value As String
 
instance.TopicPrefixHead = value
 
value = instance.TopicPrefixHead

[NotNull()]
string TopicPrefixHead {get; set;}

[NotNull()]
property String^ TopicPrefixHead {
   String^ get();
   void set (    String^ value);
}

Remarks

The default value, given by the OPC UA specification, is "opcua".

An empty string denotes that in the topic tree, any value can be present at this topic level.

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

_UADataSetSubscriptionDescriptor Interface
_UADataSetSubscriptionDescriptor Members
AssumeTopicTree Property
EffectiveAssumeTopicTree Property

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