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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 27001 to 28000 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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