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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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