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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 90001 to 91000 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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