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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 102001 to 103000 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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