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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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