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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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