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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 16001 to 17000 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