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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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