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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 16001 to 17000 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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