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Select the last node in the tree

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This is a migrated thread and some comments may be shown as answers.
Debashis Pyne
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Debashis Pyne asked on 01 Oct 2010, 04:29 PM
Hi,

I have a tree view bound from the database, so that by clicking on a node I can found the text and corresponding data value field.

protected void GenerateCompanyTree()
{
DataTable DtCompany;
JOMCMiddleWare.BL.CompanyStructure oCompanyStructure = new JOMCMiddleWare.BL.CompanyStructure();

oCompanyStructure._Module_Id = oCompanyStructure._Module_Id;
oCompanyStructure._Language_Id = Convert.ToInt32(Session[JOMCSession.__Session_Lanuage_Id]);
oCompanyStructure._Company_Id = Convert.ToInt32(Session[JOMCSession.__Session_Company_Id]);
DtCompany = oCompanyStructure.GetDataAllTreeViewCompanyStructure();

if (DtCompany.Rows.Count > 0)
{
RadTreeViewCompany.DataSource = DtCompany;
RadTreeViewCompany.DataTextField = "Module_Content_Text";
RadTreeViewCompany.DataFieldID = "Company_Id";
RadTreeViewCompany.DataFieldParentID = "Company_Parent_Id";
RadTreeViewCompany.DataValueField = "Company_Id";
RadTreeViewCompany.DataBind();
RadTreeViewCompany.ExpandAllNodes();
}
}

Now, I have the requirement that I have to enable only those nodes at the bottom (leaf level) only.
Any idea, how to achieve this?

Thanks

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Shinu
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answered on 04 Oct 2010, 07:36 AM
Hello Debashis,

One suggestion is iterating through the nodes and setting the Enablesd property based on the child node count. Add the code in OnDataBound event of treeview.

C#:
foreach (RadTreeNode node in RadTreeView2.GetAllNodes())
{
    if (node.Nodes.Count != 0)
    {
        node.Enabled = false;
    }
    else
    {
        node.Enabled = true;
    }
}



-Shinu.
0
Veronica
Telerik team
answered on 04 Oct 2010, 08:46 AM
Hi Debashis Pyne,

You can use the following javascript code to determine which node is leaf and make all nodes which have children - disabled:

function pageLoad() {
            var tree = $find("<%= RadTreeView1.ClientID %>");
            var nodes = tree.get_allNodes();
            for (var i = 0; i < nodes.length; i++) {
                if (nodes[i].get_nodes().get_count() != 0) {
                    nodes[i].disable();
                }
            }
        }

Please note that "RadTreeView1" is the ID of the RadTreeView. You should replace it with the ID of your tree.

Hope this helps.

Kind regards,
Veronica Milcheva
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Debashis Pyne
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Shinu
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Veronica
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