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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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