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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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