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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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