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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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