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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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