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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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