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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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