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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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