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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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