How to default checked true by checkboxes in treeview control

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Hi,

I am using Treeview control and binding the tree view control with xml. I set the teeview property as ShowCheckBoxes=All. My requirement is on page load, treview control should select all the check boxes by default. i.e Checked is true. I request please help me out on this.

Thanks
Mahesh.

Posted 10-Oct-10 7:44am

Mahesh Medishetty

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5 solutions

Solution 1

USE THIS CODE

VB

For I As Integer = 0 To TreeView1.Nodes.Count
        TreeView1.Nodes(I).Checked = True
    Next

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Posted 10-Oct-10 17:37pm

rajivlipu

Solution 2

Hi rajivlipu,

Using the above code, it selecting only the top node only. I need to select all the nodes i.e top to bottom nodes including childs. I Request can you help me on this.

Thanks
Mahesh.

Posted 10-Oct-10 20:39pm

Mahesh Medishetty

Solution 3

This will checked your all nodes.

C#

foreach (TreeNode node in TreeView1.Nodes)
{
  node.Checked = true;
}

If this helped you then please Vote and mark it as answer.

Posted 10-Oct-10 20:59pm

NMehta83

Solution 4

Hi Mehta,

Thanks for update. Still i am not able to select all the nodes using of the above code. It is selecting only the top node. I request please help me out on this.

Thanks
Mahesh.

Posted 10-Oct-10 21:58pm

Mahesh Medishetty

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NMehta83 · Accepted Answer · 2010-10-10T22:11:00

C#

foreach (TreeNode node in tv.Nodes)
{
node.Checked = true;
if(node.ChildNodes.Count > 0)
    checkChildNode(node);
}

private void checkChildNode(TreeNode node)
{
            foreach (TreeNode chNode in node.ChildNodes)
            {
                chNode.Checked = true;
                if (chNode.ChildNodes.Count > 0)
                    checkChildNode(chNode);
            }
}

If this helped you then please Vote and mark it as answer.