Not Field
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OpCodes.Not Field

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 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)

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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