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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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