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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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