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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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