OPC Studio User's Guide and Reference
TryParse Method (UANamespaceQualifiedParser)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.AddressSpace.Parsing Namespace > UANamespaceQualifiedParser Class : TryParse Method

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

The value represents an OPC UA namespace URI string. Any string can be passed to this parameter (i.e. will not cause System.ArgumentException), but not all values make sense and will work when an operation using them is attempted.

The value of this parameter can be null (Nothing in Visual Basic).

The value of this parameter can be null (Nothing in Visual Basic).

Infrastructure.
Syntax
'Declaration
 
<CanBeNullAttribute()>
Protected Shared Function TryParse( _
   ByVal text As String, _
   ByRef namespaceIndex As Integer, _
   ByRef namespaceUriString As String, _
   ByRef identifier As Object _
) As IStringParsingError
'Usage
 
Dim text As String
Dim namespaceIndex As Integer
Dim namespaceUriString As String
Dim identifier As Object
Dim value As IStringParsingError
 
value = UANamespaceQualifiedParser.TryParse(text, namespaceIndex, namespaceUriString, identifier)
[CanBeNull()]
protected static IStringParsingError TryParse( 
   string text,
   out int namespaceIndex,
   out string namespaceUriString,
   out object identifier
)
[CanBeNull()]
protected:
static IStringParsingError^ TryParse( 
   String^ text,
   [Out] int namespaceIndex,
   [Out] String^ namespaceUriString,
   [Out] Object^ identifier
) 

Parameters

text

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

namespaceIndex
namespaceUriString

The value represents an OPC UA namespace URI string. Any string can be passed to this parameter (i.e. will not cause System.ArgumentException), but not all values make sense and will work when an operation using them is attempted.

The value of this parameter can be null (Nothing in Visual Basic).

identifier

The value of this parameter can be null (Nothing in Visual Basic).

Return Value

This method can return 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.

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