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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 103001 to 104000 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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