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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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