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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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