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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 77001 to 78000 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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