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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 84001 to 85000 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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