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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 123001 to 124000 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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