CODEWITHSUNDEEP
c#.netvb.nettreeview
m.edmondson
m.edmondson

Reputation: 30892

Clear all asp:TreeView checkboxes

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.

Upvotes: 0

Views: 1666

Answers (1)

JohnFx
JohnFx

Reputation: 34909

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

Upvotes: 1

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