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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 14001 to 15000 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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