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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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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