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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 114001 to 115000 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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