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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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