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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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