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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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