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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 8001 to 9000 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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