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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 114001 to 115000 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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