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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 129001 to 130000 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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