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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 104001 to 105000 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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