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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 43001 to 44000 of 300000 Page: of 300 GoPage 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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