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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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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