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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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