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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 3001 to 4000 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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