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Render Modes

Product IDProduct NameCategory IDCategory NameUnit PriceDiscontinuedQuantity Per UnitUnits In Stock
Page size:
 64 items in 7 pages
CategoryName: Beverages
 24Guaraná Fantástica1Beverages4.5012 - 355 ml cans20
 34Sasquatch Ale1Beverages14.0024 - 12 oz bottles111
 35Steeleye Stout1Beverages18.0024 - 12 oz bottles20
 38Côte de Blaye1Beverages263.5012 - 75 cl bottles17
 39Chartreuse verte1Beverages18.00750 cc per bottle69
 43Ipoh Coffee1Beverages46.0016 - 500 g tins17
 67Laughing Lumberjack Lager1Beverages14.0024 - 12 oz bottles52
 70Outback Lager1Beverages15.0024 - 355 ml bottles15
 75Rhönbräu Klosterbier1Beverages7.7524 - 0.5 l bottles125
 76Lakkalikööri1Beverages18.00500 ml57
  • Render Mode
Render mode
Classic vs. Light rendering
Classic Lightweight
Markup Size
CSS Size 29.50 KB 23.70 KB
Image Sprite Size 8.64 KB 0 KB*

This demo showcases the two different rendering modes of Telerik ASP.NET Grid control: Classic and Lightweight.

  • Classic rendering is the long-standing rendering mode of the control, with extensive use of table elements for the layout and images for backgrounds, icons, etc.
  • Lightweight rendering leverages HTM5 and CSS3, but the control may lose its rounded corners, gradients and shadows in non-modern browsers.

The default render mode of the control is Classic and you have the option to either explicitly set it to Lightweight or leverage the Auto mode to have the control choose the best rendering based on the user's browser.

Note: In order to provide optimal experience for your end users, we recommend that you use only one type of render mode for a control on a given page. For example, if you have two instances of RadGrid on the page, it will be best if both of them use the same render mode.

Note: The Material skin is available only for the modern Lightweight render mode. Change the skin or the mode to properly visualize the demonstrated control.

Notes on the statistics:
The markup size is calculated automatically for the currently selected RenderMode, so if you want to compare the markup size of both modes, you could change the selection in RenderMode radio button placed in the demo configurator.

* Lightweight rendering uses shared font icons across all controls (TelerikWebUI).

  • DefaultCS.aspx
  • DefaultCS.aspx.cs
  • styles.css
<%@ Page Title="" Language="C#"  AutoEventWireup="true" CodeFile="DefaultCS.aspx.cs" Inherits=" Grid.Examples.RenderModes.DefaultCS" %>

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

<!DOCTYPE html>
<html xmlns=''>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link rel="stylesheet" type="text/css" href="styles.css" />
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <div class="demo-container" runat="server">
        <telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
            <script type="text/javascript">
                function pageLoad() {
                    var grid = $find("<%=RadGrid1.ClientID%>");
                    var renderMode = grid.get_renderMode();
                    var gridMarkupSize = Math.round((grid.get_element().innerHTML.length / 1024) * 100) / 100 + " KB";
                    document.getElementById("<%=ClassicSize.ClientID%>").innerHTML = renderMode == 1 ? gridMarkupSize : "-";
                    document.getElementById("<%=LightweightSize.ClientID%>").innerHTML = renderMode == 1 ? "-" : gridMarkupSize;

        <asp:Panel EnableViewState="true" runat="server" ID="Panel1">

         <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"        
            SelectCommand="SELECT [ProductID], [ProductName], [Products].[CategoryID], [Categories].[CategoryName] as CategoryName, [UnitPrice], [Discontinued], [QuantityPerUnit], [UnitsInStock] FROM [Products] JOIN Categories ON Products.CategoryID=Categories.CategoryID">

    <qsf:ConfiguratorPanel runat="server" ID="ConfiguratorPanel1" Title="Render Mode">

                <qsf:ConfiguratorColumn ID="ConfiguratorColumn1" runat="server" Title="Render mode" Size="Narrow">
                    <qsf:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True" CssClass="fb-group">
                        <asp:ListItem Value="Lightweight" Selected="True">Lightweight</asp:ListItem>
                        <asp:ListItem Value="Classic">Classic</asp:ListItem>

                <qsf:ConfiguratorColumn ID="ConfiguratorColumn2" runat="server" Size="Wide" Title="Classic vs. Light rendering">
                    <table class="table" cellspacing="0">
                                <th>Markup Size</th>
                                    <asp:Label ID="ClassicSize" runat="server"></asp:Label></td>
                                    <asp:Label ID="LightweightSize" runat="server"></asp:Label></td>
                                <th>CSS Size</th>
                                <td>29.50 KB</td>
                                <td>23.70 KB</td>
                                <th>Image Sprite Size</th>
                                <td>8.64 KB</td>
                                <td>0 KB*</td>

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