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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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