OpCodes.Not Field

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Computes the bitwise complement of the integer value on top of the stack and pushes the result onto the evaluation stack as the same type.

Namespace: System.Reflection.Emit
Assembly: mscorlib (in mscorlib.dll)


Public Shared ReadOnly Not As OpCode
public static readonly OpCode Not


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


Assembly Format




Computes the bitwise complement of a value.

The stack transitional behavior, in sequential order, is:

  1. value is pushed onto the stack.

  2. value is popped from the stack and its bitwise complement computed.

  3. The result is pushed onto the stack.

The not instruction computes the bitwise complement of an integer value and pushes the result onto the stack. The return type is the same as the operand type.

The following Emit method overload can use the not opcode:

  • ILGenerator.Emit(OpCode)

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1


Windows Phone

See Also


OpCodes Class

System.Reflection.Emit Namespace