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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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