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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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