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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 8001 to 9000 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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