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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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