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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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