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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 56001 to 57000 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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