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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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