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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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