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C# code:
protected void Button1_Click(object sender, EventArgs e)
{
foreach (TreeNode n in this.TreeView1.Nodes)
{
if (n.ChildNodes.Count > 0)
GetSelectedValue(n.ChildNodes);
if (n.Checked)
{
Response.Write(n.Text);
Response.Write(" <br/>");
}
}
}
void GetSelectedValue(TreeNodeCollection tc)
{
foreach (TreeNode n in tc)
{
if (n.ChildNodes.Count > 0)
GetSelectedValue(n.ChildNodes);
if (n.Checked)
{
Response.Write(n.Text);
Response.Write(" <br/>");
}
}
}


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