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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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