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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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