DiscoveryUriString Property (_UADiscoveryElement)

The URL string that can be used to reach the application, using discovery.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<NotNullAttribute()>
Property DiscoveryUriString As String

'Usage
 
Dim instance As _UADiscoveryElement
Dim value As String
 
instance.DiscoveryUriString = value
 
value = instance.DiscoveryUriString

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

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

Remarks

This value can be used as OpcLabs.BaseLib.ResourceDescriptor.UrlString.

A generic string is used instead of System.Uri, because in some cases, the value may not represent a real URI.

This value is derived from DiscoveryUriStrings. When DiscoveryUriStrings contains precisely one element, DiscoveryUriString is equal to value of this element. Otherwise, DiscoveryUriString is an empty string. Assigning a non-empty string to DiscoveryUriString clears the DiscoveryUriStrings and adds this string as a single element to the collection. Assigning an empty string to DiscoveryUriString has no effect.

Certain types of discovery queries, such as OpcLabs.EasyOpc.UA.Discovery.UALocalApplicationDiscoveryQuery or OpcLabs.EasyOpc.UA.Discovery.UALocalApplicationDiscoveryQuery with the Flat parameter set to true always return application elements which have precisely one discovery URI, and in such case it is guaranteed that DiscoveryUriString contains a non-empty string.

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

_UADiscoveryElement Interface
_UADiscoveryElement Members

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