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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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