MethodAttributes Enum

Definition

Namespace:

System.Reflection

Assembly:

System.Runtime.dll

Specifies flags for method attributes. These flags are defined in the corhdr.h file.

This enumeration supports a bitwise combination of its member values.

public enum class MethodAttributes

[System.Flags]
public enum MethodAttributes

[<System.Flags>]
type MethodAttributes = 

Public Enum MethodAttributes

Inheritance

Object

ValueType

Enum

MethodAttributes

Attributes

FlagsAttribute

Fields

Name	Value	Description
PrivateScope	0	Indicates that the member cannot be referenced.
ReuseSlot	0	Indicates that the method will reuse an existing slot in the vtable. This is the default behavior.
Private	1	Indicates that the method is accessible only to the current class.
FamANDAssem	2	Indicates that the method is accessible to members of this type and its derived types that are in this assembly only.
Assembly	3	Indicates that the method is accessible to any class of this assembly.
Family	4	Indicates that the method is accessible only to members of this class and its derived classes.
FamORAssem	5	Indicates that the method is accessible to derived classes anywhere, as well as to any class in the assembly.
Public	6	Indicates that the method is accessible to any object for which this object is in scope.
MemberAccessMask	7	Retrieves accessibility information.
UnmanagedExport	8	Indicates that the managed method is exported by thunk to unmanaged code.
Static	16	Indicates that the method is defined on the type; otherwise, it is defined per instance.
Final	32	Indicates that the method cannot be overridden.
Virtual	64	Indicates that the method is virtual.
HideBySig	128	Indicates that the method hides by name and signature; otherwise, by name only.
NewSlot	256	Indicates that the method always gets a new slot in the vtable.
VtableLayoutMask	256	Retrieves vtable attributes.
CheckAccessOnOverride	512	Indicates that the method can only be overridden when it is also accessible.
Abstract	1024	Indicates that the class does not provide an implementation of this method.
SpecialName	2048	Indicates that the method is special. The name describes how this method is special.
RTSpecialName	4096	Indicates that the common language runtime checks the name encoding.
PinvokeImpl	8192	Indicates that the method implementation is forwarded through PInvoke (Platform Invocation Services).
HasSecurity	16384	Indicates that the method has security associated with it. Reserved flag for runtime use only.
RequireSecObject	32768	Indicates that the method calls another method containing security code. Reserved flag for runtime use only.
ReservedMask	53248	Indicates a reserved flag for runtime use only.

Examples

The following example displays the attributes of the specified method.

using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;

public ref class AttributesSample
{
public:
   void Mymethod( int int1m, [Out]interior_ptr<String^> str2m, interior_ptr<String^> str3m )
   {
       *str2m = "in Mymethod";
   }
};

void PrintAttributes( Type^ attribType, int iAttribValue )
{
   if (  !attribType->IsEnum )
   {
      Console::WriteLine( "This type is not an enum." );
      return;
   }

   array<FieldInfo^>^fields = attribType->GetFields( static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Static) );
   for ( int i = 0; i < fields->Length; i++ )
   {
      int fieldvalue = safe_cast<Int32>(fields[ i ]->GetValue( nullptr ));
      if ( (fieldvalue & iAttribValue) == fieldvalue )
      {
         Console::WriteLine( fields[ i ]->Name );
      }
   }
}

int main()
{
   Console::WriteLine( "Reflection.MethodBase.Attributes Sample" );

   // Get the type of the chosen class.
   Type^ MyType = Type::GetType( "AttributesSample" );

   // Get the method Mymethod on the type.
   MethodBase^ Mymethodbase = MyType->GetMethod( "Mymethod" );

   // Display the method name and signature.
   Console::WriteLine( "Mymethodbase = {0}", Mymethodbase );

   // Get the MethodAttribute enumerated value.
   MethodAttributes Myattributes = Mymethodbase->Attributes;

   // Display the flags that are set.
   PrintAttributes( System::Reflection::MethodAttributes::typeid, (int)Myattributes );
   return 0;
}

using System;
using System.Reflection;

class AttributesSample
{
    public void Mymethod (int int1m, out string str2m, ref string str3m)
    {
        str2m = "in Mymethod";
    }

    public static int Main(string[] args)
    {
        Console.WriteLine ("Reflection.MethodBase.Attributes Sample");

        // Get the type of the chosen class.
        Type MyType = Type.GetType("AttributesSample");

        // Get the method Mymethod on the type.
        MethodBase Mymethodbase = MyType.GetMethod("Mymethod");

        // Display the method name and signature.
        Console.WriteLine("Mymethodbase = " + Mymethodbase);

        // Get the MethodAttribute enumerated value.
        MethodAttributes Myattributes = Mymethodbase.Attributes;

        // Display the flags that are set.
        PrintAttributes(typeof(System.Reflection.MethodAttributes), (int) Myattributes);
        return 0;
    }

    public static void PrintAttributes(Type attribType, int iAttribValue)
    {
        if (!attribType.IsEnum) {Console.WriteLine("This type is not an enum."); return;}

        FieldInfo[] fields = attribType.GetFields(BindingFlags.Public | BindingFlags.Static);
        for (int i = 0; i < fields.Length; i++)
        {
            int fieldvalue = (int)fields[i].GetValue(null);
            if ((fieldvalue & iAttribValue) == fieldvalue)
            {
                Console.WriteLine(fields[i].Name);
            }
        }
    }
}

Imports System.Reflection

Class AttributesSample

    Public Sub Mymethod(ByVal int1m As Integer, ByRef str2m As String, ByRef str3m As String)
        str2m = "in Mymethod"
    End Sub


    Public Shared Function Main(ByVal args() As String) As Integer
        Console.WriteLine("Reflection.MethodBase.Attributes Sample")

        ' Get the type of a chosen class.
        Dim MyType As Type = Type.GetType("AttributesSample")

        ' Get the method Mymethod on the type.
        Dim Mymethodbase As MethodBase = MyType.GetMethod("Mymethod")

        ' Display the method name and signature.
        Console.WriteLine("Mymethodbase = {0}", Mymethodbase)

        ' Get the MethodAttribute enumerated value.
        Dim Myattributes As MethodAttributes = Mymethodbase.Attributes

        ' Display the flags that are set.
        PrintAttributes(GetType(System.Reflection.MethodAttributes), CInt(Myattributes))
        Return 0
    End Function 'Main

    Public Shared Sub PrintAttributes(ByVal attribType As Type, ByVal iAttribValue As Integer)
        If Not attribType.IsEnum Then
            Console.WriteLine("This type is not an enum.")
            Return
        End If
        Dim fields As FieldInfo() = attribType.GetFields((BindingFlags.Public Or BindingFlags.Static))
        Dim i As Integer
        For i = 0 To fields.Length - 1
            Dim fieldvalue As Integer = CType(fields(i).GetValue(Nothing), Int32)
            If (fieldvalue And iAttribValue) = fieldvalue Then
                Console.WriteLine(fields(i).Name)
            End If
        Next i
    End Sub
End Class