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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 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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