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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 42001 to 43000 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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