如何以最小的复杂度检查树视图中的所有节点

Question

我需要以最小的复杂度检查/选择树视图中的所有节点。我的树视图有3个级别，其中有许多节点。 下面是我的代码：

<asp:TreeView ID="TreeView1" runat="server" DataSourceID="XmlDataSource1" ShowCheckBoxes="All" ShowExpandCollapse="true"
            <DataBindings> 
                <asp:TreeNodeBinding DataMember="Category" TextField="Name" 
                    ValueField="Value" />
                <asp:TreeNodeBinding DataMember="LeafCategory" TextField="Name" 
                    ValueField="Value" />
                <asp:TreeNodeBinding DataMember="ChildCategory" TextField="Name" 
                    ValueField="Value" />
                <asp:TreeNodeBinding DataMember="SubCategory" TextField="Name" 
                    ValueField="Value" />
                <asp:TreeNodeBinding DataMember="Categories" TextField="Name" 
                    ValueField="Value" />
            </DataBindings>
        </asp:TreeView>

Answer 1

这样的事情：

Private Sub SetMyChildren(ByVal parentNode As TreeNode, ByVal isChecked As Boolean, ByVal isSelected As Boolean)
    parentNode.Checked = isChecked
    parentNode.Selected = isSelected
    For Each child As TreeNode In parentNode.ChildNodes
        SetMyChildren(child, isChecked, isSelected)
    Next
End Sub


'f.e. set all nodes from complete TreeView to checked and selected:
For Each node As TreeNode In TreeView1.Nodes
    SetMyChildren(node, True, True)
Next