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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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