Indicates that the modified garbage collection reference represents a reference parameter within a method signature. This class cannot be inherited.
See Also: IsImplicitlyDereferenced Members
Syntax
Remarks
The C++ compiler uses the System.Runtime.CompilerServices.IsImplicitlyDereferenced modifier to distinguish reference classes that are passed by managed reference from those passed by managed pointer. The System.Runtime.CompilerServices.IsImplicitlyDereferenced class and its partner, the System.Runtime.CompilerServices.IsExplicitlyDereferenced class, disambiguate reference parameters from pointer parameters.
Compilers emit custom modifiers within metadata to change the way that the just-in-time (JIT) compiler handles values when the default behavior is not appropriate. When the JIT compiler encounters a custom modifier, it handles the value in the way that the modifier specifies. Compilers can apply custom modifiers to methods, parameters, and return values. The JIT compiler must respond to required modifiers but can ignore optional modifiers.
You can emit custom modifiers into metadata using one of the following techniques:
Using methods in the System.Reflection.Emit.TypeBuilder class such as erload:System.Reflection.Emit.TypeBuilder.DefineMethod, erload:System.Reflection.Emit.TypeBuilder.DefineField, erload:System.Reflection.Emit.TypeBuilder.DefineConstructor, and erload:System.Reflection.Emit.TypeBuilder.DefineProperty.
Generating a Microsoft intermediate language (MSIL) instruction file that contains calls to modopt and modreq, and assembling the file with the MSIL Assembler (Ilasm.exe).
Using the unmanaged reflection API.
Requirements
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 2.0.0.0, 4.0.0.0
Since: .NET 2.0