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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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