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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 17001 to 18000 of 300000 Page: of 300 GoPage 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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