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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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