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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 15001 to 16000 of 300000 Page: of 300 GoPage 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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