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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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