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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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