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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 117001 to 118000 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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