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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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