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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 102001 to 103000 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