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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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