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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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