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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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