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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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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