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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 21001 to 22000 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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