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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 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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