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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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