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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 53001 to 54000 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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