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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 98001 to 99000 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