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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 106001 to 107000 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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