Dim files As AbstractFile() = myFolder.GetFiles( True, ">*.TXT" )
Dim files As AbstractFile() = myFolder.GetFiles( True, ">*.txt|*.exe" ) )

Dim files As AbstractFile() = myFolder.GetFiles( True, New NameFilter( "*.txt" ) )

Dim files As AbstractFile() = myFolder.GetFiles( True, "*.txt" )

Dim files As AbstractFile() = myFolder.GetFiles( True, _
New OrFilter( New NameFilter( "*.txt" ), _
New NameFilter( "*.exe" ) ) )

Dim files As AbstractFile() = myFolder.GetFiles( True, New NameFilter( "*.txt|*.exe" ) )

'      
'       * Consider the following folder and file hierarchy:
'       * 
'       * Folder: NameFilter1
'       * |-------> Folder: Folder1
'       *           |-------> Folder: TargetName
'       *                     |-------> Folder: TargetNameAndExtraChars
'       *                               |-------> File: File1.dat
'       *                               |-------> File: File2.dat
'       *                               |-------> File: TargetName.dat
'       *                               |-------> File: TargetName
'       * |-------> Folder: TargetName
'       * 
'       * |-------> Folder: Folder3
'       *           |-------> Folder: Folder3_1
'       *                     |-------> Folder: TargetName
'       *                               |-------> Folder: Folder3_1_1
'       *                                         |-------> Folder: TargetName
'       *                                                   |-------> File: File3.dat
'       *                                                   |-------> File: File4.dat
'       *                               |-------> File: File5.dat
'       * |-------> File: File6.dat
'       * |-------> File: File7.dat
'       * 
'       * Suppose our goal is to select all folders (not files) that bear the name 'TargetName',
'       * then the folders:
'       * 
'       * NameFilter1->Folder1->TargetName
'       * NameFilter1->TargetName
'       * NameFilter1->Folder3->Folder3_1->TargetName
'       * NameFilter1->Folder3->Folder3_1->TargetName->Folder3_1_1->TargetName
'       * 
'       * should be selected. The 'TargetNameAndExtraChars' folder is not an exact match and the file
'       * 'TargetName' is a file not a folder.
'       * 
'       * The 'TargetName' folder under 'Folder3_1_1' is an interesting case because it is below a
'       * previous matched folder. That may or may not be desired. We can address both situations.
'       

Dim baseFolder As AbstractFolder = New DiskFolder("NameFilter1")

' This is the name we will be looking for
Dim targetName As String = "TargetName"

' If our test folders don't exist
If (Not baseFolder.Exists) Then
  ' We will create a set of files and folders to test our filter 

  Dim sourceFile, file As AbstractFile
  Dim folder As AbstractFolder

  file = baseFolder.GetFile("File6.dat")
  file.Create()
  file = baseFolder.GetFile("File7.dat")
  file.Create()

  sourceFile = file

  folder = baseFolder.GetFolder(String.Format("Folder1\{0}\{0}AndExtraChars", targetName))
  sourceFile.CopyTo(folder.GetFile("File1.dat"), True)
  sourceFile.CopyTo(folder.GetFile("File2.dat"), True)
  sourceFile.CopyTo(folder.GetFile(targetName & ".dat"), True)
  sourceFile.CopyTo(folder.GetFile(targetName), True)

  folder = baseFolder.GetFolder(targetName)
  folder.Create()

  folder = baseFolder.GetFolder(String.Format("Folder3\Folder3_1\{0}", targetName))
  sourceFile.CopyTo(folder.GetFile("File5.dat"), True)
  folder = folder.GetFolder(String.Format("Folder3_1_1\{0}", targetName))
  sourceFile.CopyTo(folder.GetFile("File3.dat"), True)
  sourceFile.CopyTo(folder.GetFile("File4.dat"), True)
End If

Dim folders() As AbstractFolder
Dim files() As AbstractFile

'      
'       * The simplest approach is use a NameFilter object and set the scope to FilterScope.Folder.
'       * This will select all the folders that have our targetName.
'       * 
'       * The key is the FilterScope argument set to Folder 

' Create a name filter that accepts our targetName on a folder only (case insensitive)
Dim nameFilter As New NameFilter(targetName, FilterScope.Folder)

' Get any folder that match our name filter
folders = baseFolder.GetFolders(True, nameFilter)

Console.WriteLine("Simple filtering")
For Each folder As AbstractFolder In folders
  Console.WriteLine(folder.FullName)
Next folder
Console.WriteLine()

'       The output will be:
'       * NameFilter1->Folder1->TargetName
'       * NameFilter1->TargetName
'       * NameFilter1->Folder3->Folder3_1->TargetName
'       * NameFilter1->Folder3->Folder3_1->TargetName->Folder3_1_1->TargetName
'
'
'      /*
'       * If you only want the most top level folder that matches the filter and not any sub folders
'       * that also match the filter, you can add filters that exclude them.
'       * 
'       * The key is to prevent the filtering engine to recurse into folders that match our tagetName.
'       * Again, the FilterScope parameter can be put to good use.
'       

' Create a name filter that matches the name 'Aid' but only when determining if the
' filter engine should look into a recursed folder
Dim recurseFilter As New NameFilter(targetName, FilterScope.Recurse)

' Wrap our recurse filter in a NotFilter to invert the decision
Dim notFilter As New NotFilter(recurseFilter)

' Get all the folders that match our name and do not match the name when recursing into sub folders
folders = baseFolder.GetFolders(True, nameFilter, notFilter)

Console.WriteLine("Filtering with only top-level matches")
For Each folder As AbstractFolder In folders
  Console.WriteLine(folder.FullName)

  '         TODO: Here, you can process all the files that are in the folder individually
  '            with folder.GetFiles() or as a group using methods like folder.CopyFilesTo(), etc 
Next folder
Console.WriteLine()

'****************************

' If you're simply looking for files 

' Get all the files that match our name (this works because by default, the FilterScore is for files only)
files = baseFolder.GetFiles(True, targetName)

Console.WriteLine("Filtering for files only")
For Each file As AbstractFile In files
  Console.WriteLine(file.FullName)
Next file
Console.WriteLine()