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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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