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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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