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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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