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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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