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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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