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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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