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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 24001 to 25000 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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