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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 100001 to 101000 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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