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MethodImplAttributes Enumeration

Specifies flags for the attributes of a method implementation.

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

[ComVisibleAttribute(true)]
public enum MethodImplAttributes

Member nameDescription
Supported by Silverlight for Windows PhoneSupported by Xbox 360CodeTypeMaskSpecifies flags about code type.
Supported by Silverlight for Windows PhoneSupported by Xbox 360ILSpecifies that the method implementation is in Microsoft intermediate language (MSIL).
Supported by Silverlight for Windows PhoneSupported by Xbox 360NativeSpecifies that the method implementation is native.
Supported by Silverlight for Windows PhoneSupported by Xbox 360OPTILSpecifies that the method implementation is in optimized intermediate language (OPTIL).
Supported by Silverlight for Windows PhoneSupported by Xbox 360RuntimeSpecifies that the method implementation is provided by the runtime.
Supported by Silverlight for Windows PhoneSupported by Xbox 360ManagedMaskSpecifies whether the code is managed or unmanaged.
Supported by Silverlight for Windows PhoneSupported by Xbox 360UnmanagedSpecifies that the method implementation is unmanaged.
Supported by Silverlight for Windows PhoneSupported by Xbox 360ManagedSpecifies that the method implementation is managed.
Supported by Silverlight for Windows PhoneSupported by Xbox 360ForwardRefSpecifies that the method is not defined.
Supported by Silverlight for Windows PhoneSupported by Xbox 360PreserveSigSpecifies that the method signature is exported exactly as declared.
Supported by Silverlight for Windows PhoneSupported by Xbox 360InternalCallSpecifies an internal call.
Supported by Silverlight for Windows PhoneSupported by Xbox 360SynchronizedSpecifies that the method is single-threaded through the body. Static methods (Shared methods 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 Lock function for this purpose.
Supported by Silverlight for Windows PhoneSupported by Xbox 360NoInliningSpecifies that the method cannot be inlined.
AggressiveInliningSpecifies that the method should always be inlined if possible.
Supported by Silverlight for Windows PhoneSupported by Xbox 360NoOptimizationSpecifies that the method is not optimized by the just-in-time (JIT) compiler when debugging possible code generation problems.
Supported by Silverlight for Windows PhoneSupported by Xbox 360MaxMethodImplValSpecifies a range check value.

The attributes are combined using the bitwise OR operation.

Code implementation masks:

  • CodeTypeMask

  • IL

  • Native

  • OPTIL

  • Runtime

Managed masks:

  • ManagedMask

  • Managed

  • Unmanaged

Implementation information and interop masks:

  • AggressiveInlining

  • ForwardRef

  • InternalCall

  • MaxMethodImplVal

  • NoInlining

  • NoOptimization

  • PreserveSig

  • Synchronized

NoteNote:

Locking on the instance or on the type, for example, by using 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.

Silverlight

Supported in: 5, 4, 3

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

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

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