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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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