<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="dnn" TagName="Label" Src="~/controls/labelcontrol.ascx" %>
<div class="dnnForm Normal">
    <asp:Panel runat="server" ID="pnlList">
        <telerik:RadGrid runat="server" AutoGenerateColumns="false" ID="theGrid">
            <HeaderStyle Font-Bold="true" />
            <MasterTableView>
                <Columns>
                    <telerik:GridBoundColumn UniqueName="Id" Display="false" DataField="Id" />
                </Columns>
            </MasterTableView>
        </telerik:RadGrid>
        <div style="margin-top: 15px;">
            <asp:LinkButton runat="server" ID="adder" Text="Add New" CssClass="dnnPrimaryAction" />
        </div>
    </asp:Panel>
    <asp:Panel runat="server" ID="pnlEdit" Visible="false">
        <asp:HiddenField runat="server" ID="editingId" />
        <ul class="dnnActions">
            <li><asp:LinkButton runat="server" ID="saveButton" CssClass="dnnPrimaryAction" Text="Save" /></li>
            <li><asp:LinkButton runat="server" ID="closeButton" CssClass="dnnSecondaryAction" Text="Close" /></li>
        </ul>
    </asp:Panel>
</div>

Boilerplate for DNN editor

DNN Module Editor Boilerplate

module

C#