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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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