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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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