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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 55001 to 56000 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