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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 99001 to 100000 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