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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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