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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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