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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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