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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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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