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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 119001 to 120000 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