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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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