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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 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