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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 57001 to 58000 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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