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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 78001 to 79000 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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