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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 92001 to 93000 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