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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 268001 to 269000 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