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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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