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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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