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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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