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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 9001 to 10000 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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