ApplicationUriString Property (_UAApplicationElement)

Application URI string. A unique identifier for the application instance.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<NotNullAttribute()>
Property ApplicationUriString As String

'Usage
 
Dim instance As _UAApplicationElement
Dim value As String
 
instance.ApplicationUriString = value
 
value = instance.ApplicationUriString

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

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

Property Value

A string that uniquely identifies the application instance. This identifier is intended to be globally unique.

This value of this property can be null (Nothing in Visual Basic).

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

The default value of this property is "" (String.Empty).

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 application URI is a critical element in OPC UA security, serving as a unique identifier for the application in security certificates and when establishing secure connections.

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

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.

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

Reference

_UAApplicationElement Interface
_UAApplicationElement Members

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