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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 222001 to 223000 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