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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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