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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 45001 to 46000 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