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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 116001 to 117000 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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