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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 48001 to 49000 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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