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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 96001 to 97000 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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