Ldarg_0 Field
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OpCodes.Ldarg_0 Field

Loads the argument at index 0 onto the evaluation stack.

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

public static readonly OpCode Ldarg_0

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


Assembly Format




Load argument 0 onto stack

The stack transitional behavior, in sequential order, is:

  1. The argument value at index 0 is pushed onto the stack.

The ldarg.0 instruction is an efficient encoding for loading the argument value at index 0.

The ldarg.0 instruction pushes the argument indexed at 0 onto the evaluation stack. The ldarg.0 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.

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 method overload can use the ldarg.0 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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