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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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