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OpCodes.Mkrefany Field

Pushes a typed reference to an instance of a specific type onto the evaluation stack.

[Visual Basic]
Public Shared ReadOnly Mkrefany As OpCode
[C#]
public static readonly OpCode Mkrefany;
[C++]
public: static OpCode Mkrefany;
[JScript]
public static var Mkrefany : OpCode;

Remarks

The following table lists the instruction's hexadecimal and Microsoft Intermediate Language (MSIL) assembly format, along with a brief reference summary:

Format Assembly Format Description
C6 < T > mkrefany class Pushes a typed reference of type class onto the stack.

The stack transitional behavior, in sequential order, is:

  1. A pointer to piece of data is pushed onto the stack.
  2. The pointer is popped and converted to a typed reference of type class.
  3. The typed reference is pushed onto the stack.

The mkrefany instruction supports the passing of dynamically typed references. The pointer must be of type &, *, or natural int, and hold the valid address of a piece of data. Class is the class token describing the type of the data referenced by the pointer. Mkrefany pushes a typed reference on the stack, providing an opaque descriptor of the pointer and the type class.

The only valid operation permitted upon a typed reference is to pass it to a method that requires a typed reference as a parameter. The callee can then use the Refanytype and Refanyval instructions to retrieve the type (class) and the address respectively.

TypeLoadException is thrown if class cannot be found. This is typically detected when Microsoft Intermediate Language (MSIL) instructions are converted to native code rather than at runtime.

The following Emit constructor overload can use the mkrefany opcode:

  • ILGenerator.Emit(OpCode, Type)

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

OpCodes Class | OpCodes Members | System.Reflection.Emit Namespace

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