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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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