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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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