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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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