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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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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