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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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