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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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