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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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