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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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