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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 9001 to 10000 of 300000 Page: of 300 GoPage 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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