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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

Product Bundles

DevCraft

Web

Mobile

Document Management

Desktop

Reporting & Mocking

Automated Testing

CMS

UI/UX Tools

Debugging

Free Tools

Support and Learning

Productivity and Design Tools

Virtualization

Related Resources

Support & Learning Resources

Find Assistance