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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

<%@ 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