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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Manager	Jaime Yorres	USA	1 2 3 4 5
2	Accounting Manager	Georg Pipps	Bulgaria	1 2 3 4 5
3	Sales Manager	Jaime Yorres	England	1 2 3 4 5
4	Sales Associate	Patricio Simpson	Spain	1 2 3 4 5
5	Accounting Manager	Hanna Moos	Bulgaria	1 2 3 4 5
6	Sales Consultant	Paul Henriot	Bulgaria	1 2 3 4 5
7	Accountant	Georg Pipps	Germany	1 2 3 4 5
8	Sales Associate	Georg Pipps	Argentina	1 2 3 4 5
9	Sales Consultant	Elizabeth Lincoln	USA	1 2 3 4 5
10	Owner	Patricio Simpson	Germany	1 2 3 4 5
11	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
12	Owner	Howard Snyder	Bulgaria	1 2 3 4 5
13	Sales Consultant	Paul Henriot	France	1 2 3 4 5
14	Sales Consultant	Pascale Cartrain	Italy	1 2 3 4 5
15	Sales Associate	Paul Henriot	USA	1 2 3 4 5
16	Sales Manager	Antonio Moreno	Argentina	1 2 3 4 5
17	Sales Associate	Georg Pipps	England	1 2 3 4 5
18	Sales Associate	Jaime Yorres	Spain	1 2 3 4 5
19	Accountant	Pascale Cartrain	England	1 2 3 4 5
20	Sales Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
21	Marketing Manager	Antonio Moreno	Austria	1 2 3 4 5
22	Sales Representative	Paul Henriot	Bulgaria	1 2 3 4 5
23	Marketing Manager	Paul Henriot	Spain	1 2 3 4 5
24	Owner	Georg Pipps	Brazil	1 2 3 4 5
25	Accountant	Hanna Moos	Austria	1 2 3 4 5
26	Marketing Assistant	Matti Karttunen	Germany	1 2 3 4 5
27	Sales Representative	Howard Snyder	Argentina	1 2 3 4 5
28	Accountant	Howard Snyder	Austria	1 2 3 4 5
29	Accountant	Howard Snyder	Austria	1 2 3 4 5
30	Marketing Assistant	Pascale Cartrain	USA	1 2 3 4 5
31	Sales Agent	Georg Pipps	France	1 2 3 4 5
32	Accounting Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
33	Accountant	Hanna Moos	Brazil	1 2 3 4 5
34	Marketing Assistant	Jaime Yorres	Brazil	1 2 3 4 5
35	Marketing Manager	Georg Pipps	England	1 2 3 4 5
36	Accounting Manager	Howard Snyder	Spain	1 2 3 4 5
37	Sales Manager	Matti Karttunen	USA	1 2 3 4 5
38	Sales Agent	Pascale Cartrain	Bulgaria	1 2 3 4 5
39	Sales Agent	Jaime Yorres	Bulgaria	1 2 3 4 5
40	Marketing Manager	Patricio Simpson	Austria	1 2 3 4 5
41	Marketing Manager	Georg Pipps	USA	1 2 3 4 5
42	Sales Manager	Paul Henriot	Austria	1 2 3 4 5
43	Owner	Georg Pipps	Italy	1 2 3 4 5
44	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
45	Marketing Manager	Elizabeth Lincoln	England	1 2 3 4 5
46	Owner	Paul Henriot	England	1 2 3 4 5
47	Sales Manager	Paul Henriot	Spain	1 2 3 4 5
48	Accounting Manager	Georg Pipps	Argentina	1 2 3 4 5
49	Sales Associate	Howard Snyder	Germany	1 2 3 4 5
50	Owner	Howard Snyder	Italy	1 2 3 4 5
51	Sales Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
52	Sales Agent	Antonio Moreno	Italy	1 2 3 4 5
53	Owner	Patricio Simpson	Brazil	1 2 3 4 5
54	Sales Representative	Howard Snyder	England	1 2 3 4 5
55	Owner	Antonio Moreno	USA	1 2 3 4 5
56	Sales Representative	Elizabeth Lincoln	USA	1 2 3 4 5
57	Sales Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
58	Accounting Manager	Pascale Cartrain	Brazil	1 2 3 4 5
59	Sales Associate	Howard Snyder	Spain	1 2 3 4 5
60	Accounting Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
61	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
62	Marketing Manager	Jaime Yorres	Argentina	1 2 3 4 5
63	Accounting Manager	Pascale Cartrain	Spain	1 2 3 4 5
64	Sales Manager	Matti Karttunen	USA	1 2 3 4 5
65	Sales Representative	Paul Henriot	Italy	1 2 3 4 5
66	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
67	Marketing Assistant	Elizabeth Lincoln	Germany	1 2 3 4 5
68	Sales Manager	Hanna Moos	Germany	1 2 3 4 5
69	Marketing Assistant	Patricio Simpson	France	1 2 3 4 5
70	Marketing Manager	Pascale Cartrain	Italy	1 2 3 4 5
71	Accounting Manager	Antonio Moreno	Brazil	1 2 3 4 5
72	Sales Associate	Hanna Moos	France	1 2 3 4 5
73	Sales Consultant	Matti Karttunen	Argentina	1 2 3 4 5
74	Sales Consultant	Antonio Moreno	USA	1 2 3 4 5
75	Sales Representative	Howard Snyder	France	1 2 3 4 5
76	Accountant	Hanna Moos	Brazil	1 2 3 4 5
77	Sales Consultant	Hanna Moos	Argentina	1 2 3 4 5
78	Owner	Pascale Cartrain	Spain	1 2 3 4 5
79	Sales Associate	Jaime Yorres	England	1 2 3 4 5
80	Sales Agent	Jaime Yorres	Brazil	1 2 3 4 5
81	Marketing Manager	Georg Pipps	France	1 2 3 4 5
82	Sales Associate	Pascale Cartrain	England	1 2 3 4 5
83	Sales Consultant	Patricio Simpson	Brazil	1 2 3 4 5
84	Owner	Hanna Moos	Spain	1 2 3 4 5
85	Sales Representative	Hanna Moos	Bulgaria	1 2 3 4 5
86	Accounting Manager	Howard Snyder	Argentina	1 2 3 4 5
87	Sales Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
88	Owner	Jaime Yorres	Austria	1 2 3 4 5
89	Marketing Manager	Georg Pipps	USA	1 2 3 4 5
90	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
91	Accounting Manager	Matti Karttunen	USA	1 2 3 4 5
92	Sales Agent	Pascale Cartrain	Spain	1 2 3 4 5
93	Accountant	Patricio Simpson	Bulgaria	1 2 3 4 5
94	Sales Associate	Patricio Simpson	Germany	1 2 3 4 5
95	Marketing Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
96	Accounting Manager	Hanna Moos	England	1 2 3 4 5
97	Marketing Assistant	Howard Snyder	Brazil	1 2 3 4 5
98	Sales Representative	Pascale Cartrain	Austria	1 2 3 4 5
99	Sales Agent	Elizabeth Lincoln	Germany	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 89001 to 90000 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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