MethodImplAttribute Classe

Definição

public ref class MethodImplAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
public sealed class MethodImplAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
[System.Serializable]
public sealed class MethodImplAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class MethodImplAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)>]
type MethodImplAttribute = class
    inherit Attribute

[<System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)>]
[<System.Serializable>]
type MethodImplAttribute = class
    inherit Attribute

[<System.AttributeUsage(System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)>]
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type MethodImplAttribute = class
    inherit Attribute

Public NotInheritable Class MethodImplAttribute
Inherits Attribute

Herança

Object

Attribute

MethodImplAttribute

Atributos

AttributeUsageAttribute SerializableAttribute ComVisibleAttribute

Exemplos

O exemplo a seguir aplica o MethodImplAttribute ao GetCalendarName método para garantir que ele não seja embutido em tempo de execução pelo compilador JIT (just-in-time).

using System;
using System.Globalization;
using System.Runtime.CompilerServices;

public class Utility
{
   [MethodImplAttribute(MethodImplOptions.NoInlining)] 
   public static string GetCalendarName(Calendar cal)
   {
      return cal.ToString().Replace("System.Globalization.", "").
                 Replace("Calendar", "");
   }
}

Imports System.Globalization
Imports System.Runtime.CompilerServices

Public Class Utility
   <MethodImplAttribute(MethodImplOptions.NoInlining)>
   Public Shared Function GetCalendarName(cal As Calendar) As String
      Return cal.ToString().Replace("System.Globalization.", "").Replace("Calendar", "")
   End Function
End Class

O exemplo a seguir chama o MethodInfo.GetMethodImplementationFlags método para determinar quais sinalizadores estão definidos para o GetCalendarName método . Ele também demonstra que essas informações não são recuperadas pelo MemberInfo.GetCustomAttributes método .

using System;
using System.Reflection;

public class Example
{
   public static void Main()
   {
      // Use reflection to get a reference to the GetCalendarName method.
      Assembly assem = Assembly.LoadFrom(@".\Example.dll");
      Type type = assem.GetType("Utility");
      MethodInfo methodInfo = type.GetMethod("GetCalendarName");
      
      // Determine whether the method has any custom attributes.
      Console.Write("Utility.GetCalendarName custom attributes:");
      object[] attribs = methodInfo.GetCustomAttributes(false);
      if (attribs.Length > 0) {
         Console.WriteLine();
         foreach (var attrib in attribs)
            Console.WriteLine("   " + attrib.ToString());   
      }
      else {
         Console.WriteLine("   <None>");
      }

      // Get the method's metadata flags.
      MethodImplAttributes flags = methodInfo.GetMethodImplementationFlags();
      Console.WriteLine("Utility.GetCalendarName flags: {0}", 
                        flags.ToString());      
   }
}
// The example displays the following output:
//     Utility.GetCalendarName custom attributes:   <None>
//     Utility.GetCalendarName flags: NoInlining

Imports System.Reflection

Module Example
   Public Sub Main()
      ' Use reflection to get a reference to the GetCalendarName method.
      Dim assem As Assembly = Assembly.LoadFrom(".\Example.dll")
      Dim type As Type = assem.GetType("Utility")
      Dim methodInfo As MethodInfo = type.GetMethod("GetCalendarName")
      
      ' Determine whether the method has any custom attributes.
      Console.Write("Utility.GetCalendarName custom attributes:")
      Dim attribs() As Object = methodInfo.GetCustomAttributes(False)
      If attribs.Length > 0 Then
         Console.WriteLine()
         For Each attrib As Object In attribs
            Console.WriteLine("   " + attrib.ToString())   
         Next
      Else
         Console.WriteLine("   <None>")
      End If

      ' Get the method's metadata flags.
      Dim flags As MethodImplAttributes = methodInfo.GetMethodImplementationFlags()
      Console.WriteLine("Utility.GetCalendarName flags: {0}", flags.ToString())      
   End Sub
End Module
' The example displays the following output:
'     Utility.GetCalendarName custom attributes:   <None>
'     Utility.GetCalendarName flags: NoInlining

Comentários

Você pode aplicar esse atributo a métodos ou construtores.

Esse atributo permite personalizar a configuração do método ou construtor ao qual ele se aplica fornecendo um MethodImplOptions valor ao construtor de classe. Os membros da MethodImplOptions enumeração correspondem aos campos de bits na CorMethodImpl tabela de metadados. Isso significa que as informações sobre o atributo não podem ser recuperadas em tempo de execução chamando o MemberInfo.GetCustomAttributes método ; em vez disso, elas são recuperadas chamando o MethodInfo.GetMethodImplementationFlags método ou ConstructorInfo.GetMethodImplementationFlags .

Construtores

Campos

Propriedades

Métodos

Implantações explícitas de interface

Aplica-se a

Confira também

• GetMethodImplementationFlags()