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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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