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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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