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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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