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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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