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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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