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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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