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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 109001 to 110000 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