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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 83001 to 84000 of 300000 Page: of 300 GoPage 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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