MethodBase.Attributes 属性

获取与此方法关联的属性。

**命名空间:**System.Reflection
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
Public MustOverride ReadOnly Property Attributes As MethodAttributes
用法
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 ()

public abstract function get Attributes () : MethodAttributes

属性值

MethodAttributes 值之一。

备注

所有成员都有一组属性，是相对于特定成员类型定义的。

若要获取 MethodAttributes，请首先获取类型。从类型获取方法。从方法获取 MethodAttributes。

给实现者的说明 使用 Attributes 属性来确定方法是否是 public、private、final、virtual 等。

示例

下面的代码示例显示用户定义的方法 Mymethod 的属性。

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
*/

这段代码产生以下输出：

Reflection.MethodBase.Attributes Sample

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

PrivateScope

FamANDAssem

Family

Public

HideBySig

ReuseSlot

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

.NET Compact Framework

受以下版本支持：2.0、1.0

请参见

参考

MethodBase 类
MethodBase 成员
System.Reflection 命名空间
MethodAttributes 枚举