ParameterInfo.Attributes Proprietà

public:
 virtual property System::Reflection::ParameterAttributes Attributes { System::Reflection::ParameterAttributes get(); };

public virtual System.Reflection.ParameterAttributes Attributes { get; }

member this.Attributes : System.Reflection.ParameterAttributes

Public Overridable ReadOnly Property Attributes As ParameterAttributes

Valore della proprietà

Oggetto ParameterAttributes che rappresenta gli attributi di questo parametro.

Esempio

Nell'esempio seguente viene definito un metodo con tre parametri. Usa la Attributes proprietà per ottenere gli attributi del secondo parametro e visualizzarli nella console.

using namespace System;
using namespace System::Reflection;
using namespace System::Runtime::InteropServices;
public ref class MyClass1
{
public:
   int MyMethod( int i, [Out]short * j, long * k )
   {
       *j = 2;
      return 0;
   }

};

void main()
{
   // Get the type. 
   Type^ myType = MyClass1::typeid;

   // Get the method named 'MyMethod' from the type.
   MethodBase^ myMethodBase = myType->GetMethod( "MyMethod" );

   // Get the parameters associated with the method.
   array<ParameterInfo^>^myParameters = myMethodBase->GetParameters();
   Console::WriteLine( "\nThe method {0} has the {1} parameters :", "ParameterInfo_Example::MyMethod", myParameters->Length );

   // Print the attributes associated with each of the parameters.
   for ( int i = 0; i < myParameters->Length; i++ )
      Console::WriteLine( "\tThe {0} parameter has the attribute : {1}", i + 1, myParameters[ i ]->Attributes );
}

using System;
using System.Reflection;
public class MyClass1
{
   public int MyMethod( int i, out short j, ref long k)
   {
      j = 2;
      return 0;
   }
}

public class ParameterInfo_Attributes
{
   public static void Main()
   {
      // Get the type.
      Type myType = typeof(MyClass1);
      // Get the method named 'MyMethod' from the type.
      MethodBase myMethodBase = myType.GetMethod("MyMethod");
      // Get the parameters associated with the method.
      ParameterInfo[] myParameters = myMethodBase.GetParameters();
      Console.WriteLine("\nThe method {0} has the {1} parameters :",
                          "ParameterInfo_Example.MyMethod", myParameters.Length);
      // Print the attributes associated with each of the parameters.
      for(int i = 0; i < myParameters.Length; i++)
         Console.WriteLine("\tThe {0} parameter has the attribute : {1}",
                                             i + 1, myParameters[i].Attributes);
   }
}

Imports System.Reflection

Public Class MyClass1
   
   Public Function MyMethod(i As Integer, ByRef j As Short, ByRef k As Long) As Integer
      j = 2
      Return 0
   End Function 'MyMethod
End Class

Public Class ParameterInfo_Attributes
   
   Public Shared Sub Main()
      ' Get the type. 
      Dim myType As Type = GetType(MyClass1)
      ' Get the method named 'MyMethod' from the type.
      Dim myMethodBase As MethodBase = myType.GetMethod("MyMethod")
      ' Get the parameters associated with the method.
      Dim myParameters As ParameterInfo() = myMethodBase.GetParameters()
      Console.WriteLine(ControlChars.Cr + "The method {0} has the {1} parameters :", "ParameterInfo_Example.MyMethod", myParameters.Length)
      ' Print the attributes associated with each of the parameters.
      Dim i As Integer
      For i = 0 To myParameters.Length - 1
         Console.WriteLine(ControlChars.Tab + "The {0} parameter has the attribute : {1}", i + 1, myParameters(i).Attributes)
      Next i
   End Sub
End Class

Commenti

Questo metodo usa il AttrsImpl metodo .

Per ottenere la matrice, ottenere prima il ParameterInfo metodo o il costruttore e quindi chiamare MethodBase.GetParameters.

Si applica a

Vedi anche

• ParameterAttributes