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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 93001 to 94000 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