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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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