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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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