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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 45001 to 46000 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