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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 261001 to 262000 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