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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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