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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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