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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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