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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 2001 to 3000 of 300000 Page: of 300 GoPage 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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