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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 7001 to 8000 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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