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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 93001 to 94000 of 300000 Page: of 300 GoPage 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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