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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 139001 to 140000 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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