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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 52001 to 53000 of 300000 Page: of 300 GoPage 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