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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 10001 to 11000 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