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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 24001 to 25000 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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