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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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