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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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