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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 of 300000 Page: of 300 GoPage 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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