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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 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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