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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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