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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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