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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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