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OpCodes.Cpobj Field

Copies the value type located at the address of an object (type &, * or native int) to the address of the destination object (type &, * or native int).

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

public static readonly OpCode Cpobj
public static final OpCode Cpobj
public static final var Cpobj : OpCode
Not applicable.

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

70 < T >

cpobj classTok

Copies a value type from a source object to a destination object.

The stack transitional behavior, in sequential order, is:

  1. The destination object reference is pushed onto the stack.

  2. The source object reference is pushed onto the stack.

  3. The two object references are popped from the stack; the value type at the address of the source object is copied to the address of the destination object.

The behavior of cpobj is unspecified if the source and destination object references are not pointers to instances of the class represented by the class token classTok (a typeref or typedef), or if classTok does not represent a value type.

NullReferenceException may be thrown if an invalid address is detected.

The following Emit method overload can use the cpobj opcode:

  • ILGenerator.Emit(OpCode, Type)

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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