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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 2001 to 3000 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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