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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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