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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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