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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 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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