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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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