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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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