OPC Studio User's Guide and Reference
DiscoveryUriStrings Property (_UADiscoveryElement)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.Discovery.ComTypes Namespace > _UADiscoveryElement Interface : DiscoveryUriStrings Property
The URLs that can be used to reach the application, using discovery.
Syntax
'Declaration
 
<NotNullAttribute()>
Property DiscoveryUriStrings As StringCollection
'Usage
 
Dim instance As _UADiscoveryElement
Dim value As StringCollection
 
instance.DiscoveryUriStrings = value
 
value = instance.DiscoveryUriStrings
[NotNull()]
StringCollection DiscoveryUriStrings {get; set;}
[NotNull()]
property StringCollection^ DiscoveryUriStrings {
   StringCollection^ get();
   void set (    StringCollection^ value);
}

Property Value

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

The individual elements of the property value cannot be null (Nothing in Visual Basic).

Exceptions
ExceptionDescription

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

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

Values from this collection 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.

The value of DiscoveryUriString is derived from this property. If you know that your discovery query returns just one discovery URI for each application element, it is easier to use the DiscoveryUriString property.

This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also