TryRelativeTo Method (

Attempts to compute a relative path string that leads from the current browse to a given browse path.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Function TryRelativeTo( _
   ByVal toPath As Object, _
   ByVal maximumParentDepth As Integer, _
   ByRef relativeResult As String _
) As Boolean

'Usage
 
Dim instance As _BrowsePath
Dim toPath As Object
Dim maximumParentDepth As Integer
Dim relativeResult As String
Dim value As Boolean
 
value = instance.TryRelativeTo(toPath, maximumParentDepth, relativeResult)

bool TryRelativeTo( 
   object toPath,
   int maximumParentDepth,
   out string relativeResult
)

bool TryRelativeTo( 
   Object^ toPath,
   int maximumParentDepth,
   [Out] String^ relativeResult
)

Parameters

toPath

The browse path to which the relative path string should be computed.

Because the OpcLabs.BaseLib.Navigation.BrowsePath has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (containing an absolute browse path to be parsed) in place of this parameter, and the corresponding browse path object will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the FromString static method instead. CAUTION: Parsing the browse path can throw OpcLabs.BaseLib.Navigation.Parsing.BrowsePathFormatException.

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

maximumParentDepth

How many levels above the base path can be referenced.

Valid values of this parameter are in the range from 0 to 2147483647 (Int32.MaxValue).

relativeResult

The relative path string from the current browse path to the .

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

Return Value

true if the relative path has been computed; false otherwise.

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.ArgumentOutOfRangeException	The value of an argument is outside the allowable range of values as defined by the invoked method. 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.

System.ArgumentOutOfRangeException

The value of an argument is outside the allowable range of values as defined by the invoked method.

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.

Example

If current browse path is /ElementA/ElementB, and is /ElementA/ElementB/ElementC/ElementD, the will be "ElementC/ElementD" and the method will return true.

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

_BrowsePath Interface
_BrowsePath Members

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