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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 117001 to 118000 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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