MarshalAsAttribute Class

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

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Indicates how to marshal the data between managed and unmanaged code.

Inheritance Hierarchy


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


<AttributeUsageAttribute(AttributeTargets.Field Or AttributeTargets.Parameter Or AttributeTargets.ReturnValue, Inherited := False)> _
Public NotInheritable Class MarshalAsAttribute _
    Inherits Attribute
[AttributeUsageAttribute(AttributeTargets.Field|AttributeTargets.Parameter|AttributeTargets.ReturnValue, Inherited = false)]
public sealed class MarshalAsAttribute : Attribute

The MarshalAsAttribute type exposes the following members.


Name Description
MarshalAsAttribute(Int16) Initializes a new instance of the MarshalAsAttribute class with the specified UnmanagedType value.
MarshalAsAttribute(UnmanagedType) Initializes a new instance of the MarshalAsAttribute class with the specified UnmanagedType enumeration member.



Name Description
Value Gets the UnmanagedType value the data is to be marshaled as.



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.)



Name Description
ArraySubType Specifies the element type of the unmanaged UnmanagedType..::.LPArray or UnmanagedType..::.ByValArray.
MarshalCookie Provides additional information to a custom marshaler.
MarshalType Specifies the fully qualified name of a custom marshaler.
MarshalTypeRef Implements MarshalAsAttribute..::.MarshalType as a type.
SizeConst Indicates the number of elements in the fixed-length array or the number of characters (not bytes) in a string to import.
SizeParamIndex Indicates which parameter contains the count of array elements, much like size_is in COM, and is zero-based.


Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0


Windows Phone

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.

See Also


System.Runtime.InteropServices Namespace