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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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