MethodBase.Attributesとは? わかりやすく解説

MethodBase.Attributes プロパティ

このメソッド関連付けられている属性取得します

名前空間: System.Reflection
アセンブリ: mscorlib (mscorlib.dll 内)
構文構文

Public MustOverride ReadOnly
 Property Attributes As MethodAttributes
Dim instance As MethodBase
Dim value As MethodAttributes

value = instance.Attributes
public abstract MethodAttributes Attributes { get;
 }
public:
virtual property MethodAttributes Attributes {
    MethodAttributes get () abstract;
}
/** @property */
public abstract MethodAttributes get_Attributes ()

プロパティ
MethodAttributes 値の 1 つ

解説解説
使用例使用例

ユーザー定義のメソッド Mymethod の属性表示するコードの例次に示します

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.
        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.
        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
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.
        Type MyType = Type.GetType("AttributesSample");
 
        // Get the method Mymethod on the type.
        MethodBase Mymethodbase = MyType.GetMethod("Mymethod");
 
        // Display the method name.
        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);
            }
        }
    }
}
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.
   Type^ MyType = Type::GetType( "AttributesSample" );

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

   // Display the method name.
   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;
}
import System.*;
import System.Reflection.*;

class AttributesSample
{   
    public void MyMethod(int
 int1m,
        /** @ref
         */ String str2m,
        /** @ref
         */ String str3m)
    {
        str2m = "in MyMethod";
    } //MyMethod

    public static void main(String[]
 args)
    {
        Console.WriteLine("Reflection.MethodBase.Attributes Sample");

        // Get the type.
        Type myType = Type.GetType("AttributesSample");

        // Get the method MyMethod on the type.
        MethodBase myMethodBase = myType.GetMethod("MyMethod");

        // Display the method name.
        Console.WriteLine(("myMethodBase = " + myMethodBase));

        // Get the MethodAttribute enumerated value.
        MethodAttributes myAttributes = myMethodBase.get_Attributes();

        // Display the flags that are set.
        PrintAttributes(System.Reflection.MethodAttributes .class.ToType()
,
            (int)(myAttributes));
    } //main

    public static void PrintAttributes(Type
 attribType, int iAttribValue)
    {
        if (!(attribType.get_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) ((Int32)(fields[i].GetValue(null)));
            if ((fieldValue & iAttribValue) == fieldValue
  ) {
                Console.WriteLine(fields[i].get_Name());
            }
        } 
    } //PrintAttributes
} //AttributesSample
 import System;
 import System.Reflection;
 
 class AttributesSample
 {
    public function Mymethod (int1m : int)
 : void
    {
    }
 
    public static function
 Main() : void
    {      
       Console.WriteLine ("Reflection.MethodBase.Attributes Sample");
       
       // Get our type
       var MyType : Type = Type.GetType("AttributesSample");
 
       // Get the method Mymethod on our type
       var Mymethodbase : MethodBase = MyType.GetMethod("Mymethod");
 
       // Print out the method
       Console.WriteLine("Mymethodbase = " + Mymethodbase);
 
       // Get the MethodAttribute enumerated value
       var Myattributes : MethodAttributes = Mymethodbase.Attributes;
 
       // print out the flags set
       PrintAttributes( System.Reflection.MethodAttributes, int(Myattributes)
 );
    }
 
 
    public static function
 PrintAttributes( attribType : Type, iAttribValue : int ) : void
 
    {
       if ( ! attribType.IsEnum ) { Console.WriteLine( "This
 type is not an enum" ); return; }
 
       var fields : FieldInfo[] = attribType.GetFields(BindingFlags.Public
 | BindingFlags.Static);
       for ( var i:int =
 0; i < fields.Length; i++ )
       {
          var fieldvalue : int = int(fields[i].GetValue(null));
          if ( (fieldvalue & iAttribValue) == fieldvalue )
          {
             Console.WriteLine( "\t" + fields[i].Name );
          }
       }
    }
 }
 AttributesSample.Main();
/* 
 This code produces the following output:
 
Reflection.MethodBase.Attributes Sample
Mymethodbase = Void Mymethod(Int32)
        PrivateScope
        FamANDAssem
        Family
        Public
        Virtual
        HideBySig
        VtableLayoutMask
        ReuseSlot
        NewSlot
*/

このコードによって、次の出力生成されます。

Reflection.MethodBase.Attributes Sample

Mymethodbase = Void Mymethod(Int32, System.String ByRef, System.String ByRef)

PrivateScope

FamANDAssem

Family

Public

HideBySig

ReuseSlot

プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
MethodBase クラス
MethodBase メンバ
System.Reflection 名前空間
MethodAttributes 列挙

_MethodBase.Attributes プロパティ

メモ : このプロパティは、.NET Framework version 2.0新しく追加されたものです。

COM オブジェクトに、Attributes プロパティへのバージョン依存しないアクセス用意されています。

このプロパティは、CLS準拠していません。  

名前空間: System.Runtime.InteropServices
アセンブリ: mscorlib (mscorlib.dll 内)
構文構文

Dim instance As _MethodBase
Dim value As MethodAttributes

value = instance.Attributes
MethodAttributes Attributes { get; }
property MethodAttributes Attributes {
    MethodAttributes get ();
}
/** @property */
MethodAttributes get_Attributes ()
function get Attributes () : MethodAttributes

プロパティ
MethodAttributes 値の 1 つ

解説解説
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
_MethodBase インターフェイス
_MethodBase メンバ
System.Runtime.InteropServices 名前空間



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