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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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