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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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