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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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