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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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