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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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