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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 97001 to 98000 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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