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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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