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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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