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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 104001 to 105000 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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