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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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