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MethodImplAttributes Enumeration

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Specifies flags for the attributes of a method implementation.

Namespace:  System.Reflection
Assembly:  mscorlib (in mscorlib.dll)

Syntax

'Declaration
<SerializableAttribute> _
Public Enumeration MethodImplAttributes

[SerializableAttribute]
public enum MethodImplAttributes

[SerializableAttribute]
public enum class MethodImplAttributes

[<SerializableAttribute>]
type MethodImplAttributes

public enum MethodImplAttributes

Members

Member name Description
CodeTypeMask Specifies flags about code type.
IL Specifies that the method implementation is in Microsoft intermediate language (MSIL).
Native Specifies that the method implementation is native.
OPTIL Specifies that the method implementation is in Optimized Intermediate Language (OPTIL).
Runtime Specifies that the method implementation is provided by the runtime.
ManagedMask Specifies whether the method is implemented in managed or unmanaged code.
Unmanaged Specifies that the method is implemented in unmanaged code.
Managed Specifies that the method is implemented in managed code.
ForwardRef Specifies that the method is not defined.
PreserveSig Specifies that the method signature is exported exactly as declared.
InternalCall Specifies an internal call.
Synchronized Specifies that the method is single-threaded through the body. Static methods (Shared in Visual Basic) lock on the type, whereas instance methods lock on the instance. You can also use the C# lock statement or the Visual Basic SyncLock statement for this purpose.
NoInlining Specifies that the method cannot be inlined.
MaxMethodImplVal Specifies a range check value.

Remarks

The attributes are combined using the bitwise OR operation as follows:

Code implementation masks:

  • CodeTypeMask

  • IL

  • Native

  • OPTIL

  • Runtime

Managed masks:

  • ManagedMask

  • Unmanaged

  • Managed

Implementation information and interop masks:

  • ForwardRef

  • PreserveSig

  • InternalCall

  • Synchronized

  • NoInlining

  • MaxMethodImplVal

Note

Locking on the instance or on the type, as with the Synchronized flag, is not recommended for public types, because code other than your own can take locks on public types and instances. This might cause deadlocks or other synchronization problems.

See Also

Reference

System.Reflection Namespace