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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 58001 to 59000 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