You can get or sets the description above the tree view control in the dialog box. like this

Example:
The following code creates an Folder browser dialog with description.
Private Sub SetDescriptionInFolderdialog() Dim objFolderDlg As System.Windows.Forms.FolderBrowserDialog objFolderDlg = New System.Windows.Forms.FolderBrowserDialog objFolderDlg.Description = "Select The Folder for saving files." If objFolderDlg.ShowDialog() = DialogResult.OK Then MessageBox.Show(objFolderDlg.SelectedPath.ToString()) End If End Sub