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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 115001 to 116000 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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