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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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