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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 54001 to 55000 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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