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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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