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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 41001 to 42000 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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