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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 87001 to 88000 of 300000 Page: of 300 GoPage 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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