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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 72001 to 73000 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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