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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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