OPC Studio User's Guide and Reference
BrowseTree(IDirectoryContents2) Method



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.Extensions.FileProviders Namespace > IDirectoryContents2Extension Class > BrowseTree Method : BrowseTree(IDirectoryContents2) Method
The directory contents object that will perform the operation.

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

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

Browses a tree of subdirectories and (optionally) files in the given directory, recursively, and including file objects.
Syntax
'Declaration
 
<ExtensionAttribute()>
<NotNullAttribute()>
Public Overloads Shared Function BrowseTree( _
   ByVal directoryContents2 As IDirectoryContents2 _
) As ITreeTraversable(Of FileSystemNodeTreePosition)
'Usage
 
Dim directoryContents2 As IDirectoryContents2
Dim value As ITreeTraversable(Of FileSystemNodeTreePosition)
 
value = IDirectoryContents2Extension.BrowseTree(directoryContents2)

Parameters

directoryContents2
The directory contents object that will perform the operation.

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

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

Return Value

Returns an object that allows to traverse the tree of directories and files.

This method never returns 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

A directory contents that supports IDirectoryContents2 is needed for browsing into subdirectories. If you only have Microsoft.Extensions.FileProviders.IDirectoryContents but also a Microsoft.Extensions.FileProviders.IFileProvider, you can use OpcLabs.BaseLib.Extensions.FileProviders.Internal.FileSystemNodeTreePositionExtension.Traverse.

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

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