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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 8001 to 9000 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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