Nop Field
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OpCodes.Nop Field

Fills space if opcodes are patched. No meaningful operation is performed although a processing cycle can be consumed.

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

public static readonly OpCode Nop

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


Assembly Format




Performs an operation without behavior.

There is no stack transitional behavior defined for this instruction.

The nop operation does nothing. It is intended to fill in space if opcodes are patched.

The following Emit method overload can use the nop 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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