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Asked: 2026-05-10T22:13:04+00:00

I’m sure this sounds like a n00b question, but how do I add sub

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I’m sure this sounds like a n00b question, but how do I add sub items programmically while populating a TreeView list in VB.NET 3.5? I have the following code, but haven’t been able to figure out how to add the sub items for each of the folders/files I’m populating the TreeView with:

Private Sub AddToList(ByVal targetDirectory As String, ByVal boolFiles As Boolean, Optional ByVal recur As Boolean = False)      Dim shortName As String      TreeView1.Items.Add(targetDirectory)      //Add subitems under here      If Directory.GetDirectories(targetDirectory).Length > 0 Then         Dim subdirectoryEntries As String() = Directory.GetDirectories(targetDirectory)         Dim subdirectory As String          For Each subdirectory In subdirectoryEntries             shortName = subdirectory.Remove(0, subdirectory.LastIndexOf('\') + 1)             TreeView1.Items.Add(shortName)             AddToList(subdirectory, False, True)              If boolFiles = True Then AddToList(subdirectory, boolFiles)         Next     End If End Sub

To clarify, I want my TreeView to look similar to the Windows Explorer look. I appreciate any and all help!

Thanks in advance! JFV

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1 Answer

  1. You need to use TreeNode objects, and add sub items to the parent TreeNode, instead of adding everything to the TreeView directly. Check out this example.

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