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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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