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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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