RequiredRuntimeAttribute Class


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Defines the metadata attribute that task authors use to identify whether the task requires a specific version of the CLR runtime.

Namespace:   Microsoft.Build.Framework
Assembly:  Microsoft.Build.Framework (in Microsoft.Build.Framework.dll)


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


Initializes a new instance of the RequiredRuntimeAttribute class.


Gets the CLR runtime version the attribute was constructed with, such as "v2.0."


When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)


This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)


Returns the hash code for this instance.(Inherited from Attribute.)


Gets the Type of the current instance.(Inherited from Object.)


When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)


When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)


Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)


Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

A task marked with the RequiredRuntimeAttribute indicates that it has a stricter runtime requirement than a regular task. It alerts MSBuild that it may need to start a separate process for the task if the current CLR runtime version does not match the required version.


This attribute is currently non-functional because only one version of the CLR (2.0) is capable of running either MSBuild version 2.0 or 3.5.

For more information about using attributes, see Extending Metadata Using Attributes.

.NET Framework
Available since 3.5

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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