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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 100001 to 101000 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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