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分享折叠:e.Node.Collapse()
展开:e.Node.Expand()Private Sub TreeView1_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect
If e.Node.IsExpanded Then
e.Node.Collapse()
Else
e.Node.Expand()
End If
end Sub