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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 82001 to 83000 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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