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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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