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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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