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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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