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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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