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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 91001 to 92000 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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