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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 11001 to 12000 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