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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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