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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 128001 to 129000 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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