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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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