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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 87001 to 88000 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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