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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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

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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>

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