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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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