是否可以在asp.net中以编程方式选择叶树节点

Question

I am working on TreeView with checkbox(Parent and leaf) where I have to make some leaf nodes selected programatically.

Is it possible ?

I tried forach loop on treeview node but can make selected(checkbox) particular node.

I tried following solution Is it possible to get one of the child node get selected programatically

but I am getting error on SelectedNode that its read only

Code is as below :

<asp:TreeView ID="TreeView1" runat="server" ShowCheckBoxes="Leaf">
</asp:TreeView>

Now I am adding treeview node

for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
    {
    TreeView1.Nodes.Add(new TreeNode(ds.Tables[0].Rows[i]["ModuleName"].ToString(), ds.Tables[0].Rows[i]["Id"].ToString()));

   DataRow[] result = ds.Tables[1].Select("ModuleId = '"+ds.Tables[0].Rows[i]["Id"].ToString()+"'");
                    foreach (DataRow row in result)
                    {
                        TreeView1.Nodes[i].ChildNodes.Add(new TreeNode(row["PageCode"].ToString(), row["Id"].ToString()));
                    }
                }

and Now how do make particular leaf node selected ??

Answer 1

Please add you code so we can understand and answer proper.

If no TreeNode is currently selected, the SelectedNode property is null.