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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 104001 to 105000 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