This topic has not yet been rated - Rate this topic

Marshal.NumParamBytes Method

.NET Framework 2.0

Other Versions

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)

Syntax

C++

Copy

public static int NumParamBytes (
	MethodInfo m
)

Copy

public static int NumParamBytes (
	MethodInfo m
)

JScript

Copy

public static function NumParamBytes (
	m : MethodInfo
) : int

Parameters

m: A MethodInfo that identifies the method to be checked.

Return Value

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

Exceptions

Exception type	Condition
ArgumentNullException	The m parameter is a null reference (Nothing in Visual Basic).
ArgumentException	The m parameter is not a MethodInfo object.

Remarks

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.

Note
This method uses SecurityAction.LinkDemand to prevent it from being called from untrusted code; only the immediate caller is required to have SecurityPermissionAttribute.UnmanagedCode permission. If your code can be called from partially trusted code, do not pass user input to Marshal class methods without validation. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.

Note

This method uses SecurityAction.LinkDemand to prevent it from being called from untrusted code; only the immediate caller is required to have SecurityPermissionAttribute.UnmanagedCode permission. If your code can be called from partially trusted code, do not pass user input to Marshal class methods without validation. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.

.NET Framework Security

SecurityPermission for permission to call unmanaged code. Associated enumeration: UnmanagedCode Security action: LinkDemand

Platforms

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

Version Information

.NET Framework

Supported in: 2.0, 1.1, 1.0

Reference

Marshal Class
Marshal Members
System.Runtime.InteropServices Namespace

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

Community Content Add

FAQ