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how find previously selected node in treeview

Posted on 2004-11-05
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Last Modified: 2010-04-24
what is the easiest way to find the previously selected node in a treeview?
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Question by:brokeMyLegBiking
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Mike Tomlinson earned 1400 total points
ID: 12508220
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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