how find previously selected node in treeview

what is the easiest way to find the previously selected node in a treeview?
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brokeMyLegBikingAsked:
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Mike TomlinsonMiddle School Assistant TeacherCommented:
You can just store a reference to it like this:

Public Class Form1
    Inherits System.Windows.Forms.Form

    Private prevNode As TreeNode

    Private Sub TreeView1_AfterSelect(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect
        Dim curNode As TreeNode = TreeView1.SelectedNode

        If Not ((prevNode Is Nothing)) AndAlso (Not (curNode Is prevNode)) Then
            ' do something with the previous node

        End If

        ' set the previous node to the current node
        prevNode = curNode
    End Sub
End Class
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Visual Basic.NET

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