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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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