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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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