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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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