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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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