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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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