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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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