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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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