清除所有asp：TreeView复选框

Question

What is the best way to clear all of a asp:TreeView checkboxes so that they are all unchecked? I've tried iterating through the treenodes and unchecking but this isn't working especially for child node checkboxes.

Answer 1

Your own answer is close, but won't traverse down the tree. Try a recursive method like this.

   Private Sub unCheckNodesIncludingDescendants(Node as TreeNode)
        Node.checked=false
        For Each tn As TreeNode In Node.ChildNodes
            tn.Checked = False
            unCheckNodesIncludingDescendants(tn)
        Next tn
    End Sub

Your initial call would look like this:

private sub UncheckWholeTree(TreeControl as TreeView)
    For each rootNode as TreeNode in TreeControl.nodes
      unCheckNodesIncludingDescendants(rootNode)
    Next rootNode
end sub