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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 2001 to 3000 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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