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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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