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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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