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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 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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