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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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