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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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