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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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