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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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