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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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