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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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