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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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