This is a migrated thread and some comments may be shown as answers.

treeview dynamically

3 Answers 63 Views

TreeView

This is a migrated thread and some comments may be shown as answers.

3 Answers, 1 is accepted

answered on 11 Aug 2011, 01:54 PM

Hello Rashmi,

Here is the sample code that I tried to create TreeView dynamically which worked as expected.

aspx:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

</div>

</form>

</body>

</html>

C#:

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

RadTreeView testTree = new RadTreeView();

testTree.ID = "testTree";

RadTreeNode node1 = new RadTreeNode();

node1.Text = "Inbox";

testTree.Nodes.Add(node1);

RadTreeNode node2 = new RadTreeNode();

node2.Text = "Drafts";

testTree.Nodes.Add(node2);

this.Controls.Add(testTree);

}

Thanks,
Princy.

answered on 11 Aug 2011, 03:04 PM

hi

Thanks for your reply. Below is my problem.Please check this
ScriptManager is already there

I have RadCombobox with RadTreeView like below

<telerik:RadComboBox    ID="ExportContactsClassMenu" RunAt="server" Skin="Vista" Width="195" Enabled="false"   >

                                                    <ItemTemplate>
                                                        <telerik:RadTreeView
                                                            RunAt="server"
                                                            ID="ExportContactsClassMenu_EmbeddedTreeView"
                                                            OnClientNodeClicking="ExportContactsClassMenu_OnClientNodeClicking">
                                                            <DataBindings>

                                                            </DataBindings>
                                                        </telerik:RadTreeView>
                                                    </ItemTemplate>
                                                    <Items>
                                                        <telerik:RadComboBoxItem Text="" />
                                                    </Items>
                                                </telerik:RadComboBox>
I have a datatable with Runat=server in callback content. I have to add this RadCombobox to datatable row cell dynamically in codebehind

HtmlTableCell cell0 = new HtmlTableCell();
        cell0.Controls.Add(ExportContactsClassMenu);//ExportContactsClassMenu - radcombobox id
        row.Cells.Add(cell0);
        RulesTable.Rows.Add(row);//datatable id
when i am trying to do above thing i am getting the following error
'script controls cannot be registered after prerender'.

thanks
Rashmi

Product Bundles

DevCraft

Web

Mobile

Document Management

Desktop

Reporting & Mocking

Automated Testing

CMS

UI/UX Tools

Debugging

Free Tools

Support and Learning

Productivity and Design Tools

treeview dynamically

3 Answers, 1 is accepted