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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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