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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 79001 to 80000 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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