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OpCodes.Stobj Field

Copies a value of a specified type from the evaluation stack into a supplied memory address.

[Visual Basic]
Public Shared ReadOnly Stobj As OpCode
public static readonly OpCode Stobj;
public: static OpCode Stobj;
public static var Stobj : OpCode;


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
81 < T > stobj class Stores a value of type class from the stack into memory.

The stack transitional behavior, in sequential order, is:

  1. An address is pushed onto the stack.
  2. A value type object of type class is pushed onto the stack.
  3. The object and the address are popped from the stack; the value type object is stored at the address.

The stobj instruction copies the value type object into the address specified by the address(a pointer of type natural int, *, or &). The number of bytes copied depends on the size of the class represented by class, a metadata token representing a value type.

The operation of the stobj instruction can be altered by an immediately preceding Volatile or Unaligned prefix instruction.

TypeLoadException is thrown if class cannot be found. This is typically detected when Microsoft Intermediate Language (MSIL) instructions are converted to native code rather than at run time.

The following Emit constructor overload can use the stobj opcode:

  • ILGenerator.Emit(OpCode, Type)


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

OpCodes Class | OpCodes Members | System.Reflection.Emit Namespace