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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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