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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 97001 to 98000 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