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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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