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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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