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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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