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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 108001 to 109000 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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