MethodImplOptions Enumeration (System.Runtime.CompilerServices)

MethodImplOptions Enumeration

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Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

MethodImplOptions Enumeration

Defines the details of how a method is implemented.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

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

Syntax

Visual Basic (Declaration)

<SerializableAttribute> _
<ComVisibleAttribute(True)> _
<FlagsAttribute> _
Public Enumeration MethodImplOptions

Visual Basic (Usage)

Dim instance As MethodImplOptions

[SerializableAttribute]
[ComVisibleAttribute(true)]
[FlagsAttribute]
public enum MethodImplOptions

Visual C++

[SerializableAttribute]
[ComVisibleAttribute(true)]
[FlagsAttribute]
public enum class MethodImplOptions

JScript

public enum MethodImplOptions

Members

	Member name	Description
	Unmanaged	Specifies that the method is implemented in unmanaged code.
	ForwardRef	Specifies that the method is declared, but its implementation is provided elsewhere.
	PreserveSig	Specifies that the method signature is exported exactly as declared.
	InternalCall	Specifies an internal call. An internal call is a call to a method that is implemented within the common language runtime itself.
	Synchronized	Specifies that the method can be executed by only one thread at a time. Static methods lock on the type, whereas instance methods lock on the instance. Only one thread can execute in any of the instance functions, and only one thread can execute in any of a class's static functions.
	NoInlining	Specifies that the method cannot be inlined.
	NoOptimization	Specifies that the method is not optimized by the just-in-time (JIT) compiler or by native code generation (see Ngen.exe) when debugging possible code generation problems.

Remarks

This enumeration is used with the MethodImplAttribute enumeration.

You can specify multiple MethodImplOptions values by using the bitwise OR operator.

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.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Reference

System.Runtime.CompilerServices Namespace