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OpCodes.Ldarg Field

Loads an argument (referenced by a specified index value) onto the stack.

[Visual Basic]
Public Shared ReadOnly Ldarg As OpCode
[C#]
public static readonly OpCode Ldarg;
[C++]
public: static OpCode Ldarg;
[JScript]
public static var Ldarg : OpCode;

Remarks

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
FE 09 < unsigned int16 > ldarg index Load argument at index onto stack.

The stack transitional behavior, in sequential order, is:

  1. The argument value at index is pushed onto the stack.

The ldarg instruction pushes the argument indexed at index, where arguments are indexed from 0 onwards, onto the evaluation stack. The ldarg instruction can be used to load a value type or a primitive value onto the stack by copying it from an incoming argument. The type of the argument value is the same as the type of the argument, as specified by the current method's signature.

For procedures that take a variable-length argument list, the ldarg instruction can be used only for the initial fixed arguments, not those in the variable part of the signature (see the Arglist instruction for more details).

Arguments that hold an integer value smaller than 4 bytes long are expanded to type int32 when they are loaded onto the stack. Floating-point values are expanded to their native size (type F).

The following Emit constructor overload can use the ldarg opcode:

  • ILGenerator.Emit(OpCode, short)

Requirements

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

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