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

FE 1C < T >	sizeof valType	Push the size, in bytes, of a value type as an unsigned int32.

The stack transitional behavior, in sequential order, is:

[The 'ordered' type of list has not been implemented in the ECMA stylesheet.]

valType must be a metadata token (a typeref or typedef) that specifies a value type, reference type, or generic type parameter.

For a reference type, the size returned is the size of a reference value of the corresponding type (4 bytes on 32-bit systems), not the size of the data stored in objects referred to by the reference value. A generic type parameter can be used only in the body of the type or method that defines it. When that type or method is instantiated, the generic type parameter is replaced by a value type or reference type.

The following ILGenerator.Emit(OpCode) method overload can use the sizeof opcode:

• ILGenerator.Emit(OpCode, Type)

Namespace: System.Reflection.Emit
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0