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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1001 to 2000 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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