Artigo
11/17/2011

TargetFrameworkAttribute Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Identifies the version of the .NET Framework that a particular assembly was compiled against.

Inheritance Hierarchy

System.Object
System.Attribute
System.Runtime.Versioning.TargetFrameworkAttribute

Namespace: System.Runtime.Versioning
Assembly: mscorlib (in mscorlib.dll)

Syntax

'Declaration
<AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple := False,  _
    Inherited := False)> _
Public NotInheritable Class TargetFrameworkAttribute _
    Inherits Attribute

[AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple = false, 
    Inherited = false)]
public sealed class TargetFrameworkAttribute : Attribute

The TargetFrameworkAttribute type exposes the following members.

Constructors

	Name	Description
	TargetFrameworkAttribute	Initializes an instance of the TargetFrameworkAttribute class by specifying the .NET Framework version against which an assembly was built.

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Properties

	Name	Description
	FrameworkDisplayName	Gets the display name of the .NET Framework version against which an assembly was built.
	FrameworkName	Gets the name of the .NET Framework version against which a particular assembly was compiled.

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Methods

	Name	Description
	Equals	Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Returns the hash code for this instance. (Inherited from Attribute.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Match	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

The TargetFrameworkAttribute class provides an attribute that you can apply to an assembly to indicate the version of the .NET Framework runtime against which the assembly was built. For example, the following example applies the TargetFrameworkAttribute to an assembly to indicate that it was built using Silverlight 4.

Imports System.Runtime.Versioning

<Assembly: TargetFramework("Silverlight,Version=v4.0)")> 

Namespace MyCompany.Utilities
   Public Class StringLibrary
      ' Members defined here.
   End Class
End Namespace

The TargetFrameworkAttribute class constructor has a single parameter, frameworkName, that specifies the .NET Framework version against which the assembly was built. This parameter maps to the FrameworkName property. In addition, the TargetFrameworkAttribute attribute can specify a FrameworkDisplayName property to provide a more descriptive .NET Framework version string that is suitable for displaying to clients of the assembly. The following example applies the TargetFrameworkAttribute to an assembly and assigns both property values to indicate that the assembly was built using Silverlight 4.

Imports System.Runtime.Versioning

<Assembly: TargetFramework("Silverlight,Version=v4.0)", _
          FrameworkDisplayName:="Microsoft Silverlight, Version 4.0")> 

Namespace MyCompany.Utilities
   Public Class StringLibrary
      ' Members defined here.
   End Class
End Namespace

Platform Notes

Silverlight for Windows Phone

This type is present to support the .NET Compact Framework infrastructure in Silverlight for Windows Phone, and it is not intended to be used in your application code.

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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