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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 83001 to 84000 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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