vb.net - OpenFileDialog still uses memory after exiting. Is this normal?

Question

I use a CommonOpenFileDialog as a FolderBrowserDialog. For this, I had downloaded the WindowsAPICodePack-Shell.1.1.1 via NuGet. I noticed that when loading the dialog, my memory usage increases from 18MB to 55 MB, and after exiting (whether successful or not) it only drops to ≈36 MB. What can this be related to? And what can I do?

Dim Ordnerpfad As String = ""
        Using OFolderD As New CommonOpenFileDialog
            OFolderD.Title = "Ordner ausw?hlen"
            OFolderD.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
            OFolderD.IsFolderPicker = True
            If OFolderD.ShowDialog() = CommonFileDialogResult.Ok Then
                Ordnerpfad = OFolderD.FileName
            Else
                Return
            End If
        End Using

picture of the memory usage

Answer 1

等待大神答复