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)

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

Member nameDescription
AggressiveInlining

The method should be inlined if possible.

ForwardRef

The method is declared, but its implementation is provided elsewhere.

InternalCall

The call is internal, that is, it calls a method that is implemented within the common language runtime.

NoInlining

The method cannot be inlined. Inlining is an optimization by which a method call is replaced with the method body.

NoOptimization

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.

PreserveSig

The method signature is exported exactly as declared.

Synchronized

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.

Unmanaged

The method is implemented in unmanaged code.

This enumeration is used with the MethodImplAttribute attribute.

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

System_CAPS_noteNote

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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