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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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