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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 11001 to 12000 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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