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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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