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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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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