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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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