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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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