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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 24001 to 25000 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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