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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 263001 to 264000 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