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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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