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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 9001 to 10000 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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