Dup Field
TOC
Collapse the table of content
Expand the table of content

OpCodes.Dup Field

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

Copies the current topmost value on the evaluation stack, and then pushes the copy onto the evaluation stack.

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

public static readonly OpCode Dup

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

25

dup

Duplicates the value on the top of the stack.

The stack transitional behavior, in sequential order, is:

  1. value is pushed onto the stack.

  2. value is popped off of the stack for duplication.

  3. value is pushed back onto the stack.

  4. A duplicate value is pushed onto the stack.

The dup instruction duplicates the top element of the stack, and leaves two identical values atop it.

The following Emit method overload can use the dup opcode:

  • ILGenerator.Emit(OpCode)

Windows Phone OS

Supported in: 8.1, 8.0, 7.1

Windows Phone

Show:
© 2016 Microsoft