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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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