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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 46001 to 47000 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="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ 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