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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 77001 to 78000 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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