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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 288001 to 289000 of 300000 Page: of 300 GoPage 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