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TargetFrameworkAttribute Class

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

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

Namespace:  System.Runtime.Versioning
Assembly:  mscorlib (in mscorlib.dll)
'Declaration
<AttributeUsageAttribute(AttributeTargets.Assembly, AllowMultiple := False,  _
	Inherited := False)> _
Public NotInheritable Class TargetFrameworkAttribute _
	Inherits Attribute

The TargetFrameworkAttribute type exposes the following members.

  NameDescription
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsTargetFrameworkAttributeInitializes an instance of the TargetFrameworkAttribute class by specifying the .NET Framework version against which an assembly was built.
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  NameDescription
Public propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsFrameworkDisplayNameGets the display name of the .NET Framework version against which an assembly was built.
Public propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsFrameworkNameGets the name of the .NET Framework version against which a particular assembly was compiled.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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  NameDescription
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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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 .NET Framework 4.

Imports System.Runtime.Versioning

<Assembly:TargetFramework(".NETFramework,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 .NET Framework 4. 

Imports System.Runtime.Versioning

<Assembly:TargetFramework(".NETFramework,Version=v4.0)", _
          FrameworkDisplayName := ".NET Framework, Version 4.0")>

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

.NET Framework

Supported in: 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

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.

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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