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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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