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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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