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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 264001 to 265000 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