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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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