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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 80001 to 81000 of 300000 Page: of 300 GoPage 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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