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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 53001 to 54000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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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