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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 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