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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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