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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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