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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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