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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 65001 to 66000 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