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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 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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