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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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