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MethodAttributes Enumeration

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

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

[Visual Basic]
<Flags>
<Serializable>
Public Enum MethodAttributes
[C#]
[Flags]
[Serializable]
public enum MethodAttributes
[C++]
[Flags]
[Serializable]
__value public enum MethodAttributes
[JScript]
public
   Flags
 Serializable
enum MethodAttributes

Members

Member name Description Value
Abstract

Supported by the .NET Compact Framework.

Indicates that the class does not provide an implementation of this method. 1024
Assembly

Supported by the .NET Compact Framework.

Indicates that the method is accessible to any class of this assembly. 3
CheckAccessOnOverride Indicates that the method can only be overridden when it is also accessible. 512
FamANDAssem

Supported by the .NET Compact Framework.

Indicates that the method is accessible to members of this type and its derived types that are in this assembly only. 2
Family

Supported by the .NET Compact Framework.

Indicates that the method is accessible only to members of this class and its derived classes. 4
FamORAssem

Supported by the .NET Compact Framework.

Indicates that the method is accessible to derived classes anywhere, as well as to any class in the assembly. 5
Final

Supported by the .NET Compact Framework.

Indicates that the method cannot be overridden. 32
HasSecurity

Supported by the .NET Compact Framework.

Indicates that the method has security associated with it. Reserved flag for runtime use only. 16384
HideBySig

Supported by the .NET Compact Framework.

Indicates that the method hides by name and signature; otherwise, by name only. 128
MemberAccessMask

Supported by the .NET Compact Framework.

Retrieves accessibility information. 7
NewSlot

Supported by the .NET Compact Framework.

Indicates that the method always gets a new slot in the vtable. 256
PinvokeImpl

Supported by the .NET Compact Framework.

Indicates that the method implementation is forwarded through PInvoke (Platform Invocation Services). 8192
Private

Supported by the .NET Compact Framework.

Indicates that the method is accessible only to the current class. 1
PrivateScope

Supported by the .NET Compact Framework.

Indicates that the member cannot be referenced. 0
Public

Supported by the .NET Compact Framework.

Indicates that the method is accessible to any object for which this object is in scope. 6
RequireSecObject

Supported by the .NET Compact Framework.

Indicates that the method calls another method containing security code. Reserved flag for runtime use only. 32768
ReservedMask

Supported by the .NET Compact Framework.

Indicates a reserved flag for runtime use only. 53248
ReuseSlot

Supported by the .NET Compact Framework.

Indicates that the method will reuse an existing slot in the vtable. This is the default behavior. 0
RTSpecialName

Supported by the .NET Compact Framework.

Indicates that the common language runtime checks the name encoding. 4096
SpecialName

Supported by the .NET Compact Framework.

Indicates that the method is special. The name describes how this method is special. 2048
Static

Supported by the .NET Compact Framework.

Indicates that the method is defined on the type; otherwise, it is defined per instance. 16
UnmanagedExport

Supported by the .NET Compact Framework.

Indicates that the managed method is exported by thunk to unmanaged code. 8
Virtual

Supported by the .NET Compact Framework.

Indicates that the method is virtual. 64
VtableLayoutMask

Supported by the .NET Compact Framework.

Retrieves vtable attributes. 256

Example

[Visual Basic, C#, C++] The following example displays the attributes of the specified method.

[Visual Basic] 
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

Class AttributesSample

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


    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 'PrintAttributes
End Class 'AttributesSample

[C#] 
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 = (Int32)fields[i].GetValue(null);
            if ((fieldvalue & iAttribValue) == fieldvalue)
            {
                Console.WriteLine(fields[i].Name);
            }
        }
    }
}

[C++] 
#using <mscorlib.dll>
using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;

public __gc class AttributesSample
{
public:
    void Mymethod (int int1m, [Out] String** str2m, String** str3m)
    {
        *str2m = S"in Mymethod";
    }
};

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

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

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

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

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

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

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.Reflection

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: Mscorlib (in Mscorlib.dll)

See Also

System.Reflection Namespace

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