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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 56001 to 57000 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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