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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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