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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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