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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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