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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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