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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 127001 to 128000 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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