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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 17001 to 18000 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