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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 53001 to 54000 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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