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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 77001 to 78000 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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