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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 46001 to 47000 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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