New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accounting Manager	Antonio Moreno	Brazil	1 2 3 4 5
2	Sales Associate	Georg Pipps	Bulgaria	1 2 3 4 5
3	Sales Agent	Patricio Simpson	USA	1 2 3 4 5
4	Sales Associate	Elizabeth Lincoln	Germany	1 2 3 4 5
5	Owner	Pascale Cartrain	USA	1 2 3 4 5
6	Accountant	Matti Karttunen	USA	1 2 3 4 5
7	Owner	Georg Pipps	England	1 2 3 4 5
8	Accounting Manager	Pascale Cartrain	England	1 2 3 4 5
9	Sales Representative	Georg Pipps	France	1 2 3 4 5
10	Sales Representative	Hanna Moos	France	1 2 3 4 5
11	Accounting Manager	Jaime Yorres	Germany	1 2 3 4 5
12	Sales Associate	Jaime Yorres	England	1 2 3 4 5
13	Marketing Assistant	Pascale Cartrain	Germany	1 2 3 4 5
14	Marketing Assistant	Patricio Simpson	Austria	1 2 3 4 5
15	Sales Agent	Paul Henriot	Bulgaria	1 2 3 4 5
16	Sales Associate	Pascale Cartrain	England	1 2 3 4 5
17	Accountant	Matti Karttunen	England	1 2 3 4 5
18	Marketing Manager	Howard Snyder	Italy	1 2 3 4 5
19	Sales Representative	Paul Henriot	England	1 2 3 4 5
20	Sales Manager	Pascale Cartrain	France	1 2 3 4 5
21	Owner	Paul Henriot	Germany	1 2 3 4 5
22	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
23	Marketing Assistant	Antonio Moreno	Germany	1 2 3 4 5
24	Owner	Matti Karttunen	Argentina	1 2 3 4 5
25	Sales Associate	Patricio Simpson	Spain	1 2 3 4 5
26	Accounting Manager	Paul Henriot	Austria	1 2 3 4 5
27	Accounting Manager	Patricio Simpson	USA	1 2 3 4 5
28	Marketing Assistant	Pascale Cartrain	France	1 2 3 4 5
29	Sales Representative	Georg Pipps	Italy	1 2 3 4 5
30	Sales Agent	Howard Snyder	France	1 2 3 4 5
31	Owner	Georg Pipps	Italy	1 2 3 4 5
32	Sales Associate	Matti Karttunen	Brazil	1 2 3 4 5
33	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
34	Owner	Hanna Moos	Bulgaria	1 2 3 4 5
35	Owner	Pascale Cartrain	Germany	1 2 3 4 5
36	Marketing Assistant	Antonio Moreno	Brazil	1 2 3 4 5
37	Marketing Assistant	Howard Snyder	England	1 2 3 4 5
38	Owner	Jaime Yorres	Brazil	1 2 3 4 5
39	Accountant	Hanna Moos	USA	1 2 3 4 5
40	Sales Consultant	Georg Pipps	Bulgaria	1 2 3 4 5
41	Sales Manager	Howard Snyder	Italy	1 2 3 4 5
42	Sales Associate	Elizabeth Lincoln	USA	1 2 3 4 5
43	Sales Manager	Pascale Cartrain	Italy	1 2 3 4 5
44	Sales Representative	Georg Pipps	Argentina	1 2 3 4 5
45	Sales Agent	Georg Pipps	USA	1 2 3 4 5
46	Owner	Antonio Moreno	Austria	1 2 3 4 5
47	Sales Consultant	Pascale Cartrain	Spain	1 2 3 4 5
48	Accountant	Pascale Cartrain	Italy	1 2 3 4 5
49	Owner	Patricio Simpson	Spain	1 2 3 4 5
50	Owner	Paul Henriot	France	1 2 3 4 5
51	Sales Agent	Howard Snyder	France	1 2 3 4 5
52	Sales Consultant	Paul Henriot	Bulgaria	1 2 3 4 5
53	Sales Representative	Howard Snyder	Bulgaria	1 2 3 4 5
54	Sales Representative	Jaime Yorres	Austria	1 2 3 4 5
55	Sales Associate	Paul Henriot	Austria	1 2 3 4 5
56	Sales Associate	Matti Karttunen	Brazil	1 2 3 4 5
57	Sales Agent	Hanna Moos	Bulgaria	1 2 3 4 5
58	Sales Representative	Howard Snyder	France	1 2 3 4 5
59	Sales Manager	Pascale Cartrain	France	1 2 3 4 5
60	Marketing Manager	Patricio Simpson	Argentina	1 2 3 4 5
61	Owner	Pascale Cartrain	Italy	1 2 3 4 5
62	Owner	Elizabeth Lincoln	Italy	1 2 3 4 5
63	Sales Manager	Pascale Cartrain	England	1 2 3 4 5
64	Sales Associate	Patricio Simpson	Brazil	1 2 3 4 5
65	Sales Representative	Howard Snyder	Brazil	1 2 3 4 5
66	Sales Consultant	Patricio Simpson	Austria	1 2 3 4 5
67	Sales Agent	Jaime Yorres	Germany	1 2 3 4 5
68	Sales Representative	Paul Henriot	Germany	1 2 3 4 5
69	Owner	Hanna Moos	Germany	1 2 3 4 5
70	Sales Manager	Howard Snyder	Italy	1 2 3 4 5
71	Sales Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
72	Sales Representative	Hanna Moos	Germany	1 2 3 4 5
73	Owner	Georg Pipps	Austria	1 2 3 4 5
74	Marketing Assistant	Antonio Moreno	Austria	1 2 3 4 5
75	Marketing Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
76	Marketing Manager	Hanna Moos	Spain	1 2 3 4 5
77	Marketing Assistant	Patricio Simpson	Italy	1 2 3 4 5
78	Sales Associate	Paul Henriot	Brazil	1 2 3 4 5
79	Sales Representative	Matti Karttunen	Spain	1 2 3 4 5
80	Sales Representative	Antonio Moreno	Germany	1 2 3 4 5
81	Sales Associate	Howard Snyder	Brazil	1 2 3 4 5
82	Accountant	Georg Pipps	Germany	1 2 3 4 5
83	Marketing Manager	Pascale Cartrain	Germany	1 2 3 4 5
84	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
85	Sales Representative	Pascale Cartrain	Argentina	1 2 3 4 5
86	Sales Manager	Matti Karttunen	Brazil	1 2 3 4 5
87	Sales Manager	Antonio Moreno	France	1 2 3 4 5
88	Sales Agent	Antonio Moreno	England	1 2 3 4 5
89	Owner	Hanna Moos	Bulgaria	1 2 3 4 5
90	Sales Associate	Matti Karttunen	Germany	1 2 3 4 5
91	Marketing Assistant	Hanna Moos	Brazil	1 2 3 4 5
92	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
93	Marketing Assistant	Hanna Moos	England	1 2 3 4 5
94	Sales Associate	Georg Pipps	USA	1 2 3 4 5
95	Owner	Patricio Simpson	USA	1 2 3 4 5
96	Accounting Manager	Paul Henriot	England	1 2 3 4 5
97	Sales Associate	Howard Snyder	Brazil	1 2 3 4 5
98	Marketing Manager	Paul Henriot	Austria	1 2 3 4 5
99	Accountant	Georg Pipps	England	1 2 3 4 5
100	Marketing Manager	Elizabeth Lincoln	Spain	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance