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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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