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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 53001 to 54000 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