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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 9001 to 10000 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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