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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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