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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 104001 to 105000 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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