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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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