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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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