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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 80001 to 81000 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