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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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