NumParamBytes Method
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Marshal.NumParamBytes Method (MethodInfo)


Calculates the number of bytes in unmanaged memory that are required to hold the parameters for the specified method.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

public static int NumParamBytes(
	MethodInfo m


Type: System.Reflection.MethodInfo

The method to be checked.

Return Value

Type: System.Int32

The number of bytes required to represent the method parameters in unmanaged memory.

Exception Condition

The m parameter is null.


The m parameter is not a MethodInfo object.

The NumParamBytes method returns the stack size (in bytes) needed to represent the parameters of a method signature in unmanaged memory.

Note that the return value of this method is platform-dependent. For example, a signature with a single integer parameter returns a value of 4 on 32-bit platforms and a value of 8 on 64-bit platforms.


requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

.NET Framework
Available since 1.1
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