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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 3001 to 4000 of 300000 Page: of 300 GoPage 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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