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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 119001 to 120000 of 300000 Page: of 300 GoPage 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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