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Page.AspCompatMode Property

This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.

Sets a value indicating whether the page can be executed on a single-threaded apartment (STA) thread.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)
protected bool AspCompatMode { get; set; }
<asp:Page AspCompatMode="True|False" />

Property Value

Type: System.Boolean
true if the page supports Active Server Pages (ASP) code; otherwise, false. The default is false.

When set to true, this property allows the page to be executed on a single-threaded apartment (STA) thread. This allows the page to call STA components, such as components developed with Visual Basic 6.0. Setting this property to true also allows the page to call COM+ components that require access to the unmanaged ASP built-in objects. These are accessible through the ASP ObjectContext object or the OnStartPage method.

In most circumstances, do not set this property in code. Set the aspcompat attribute to true using the @ Page directive in the .aspx file. When the page is requested, the dynamically generated class sets the property.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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