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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 108001 to 109000 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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