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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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