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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 71001 to 72000 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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