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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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