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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 262001 to 263000 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