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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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