FieldInfo.IsPublic Propiedad

Definición

Espacio de nombres:

System.Reflection

Ensamblado:

System.Runtime.dll

Source:

FieldInfo.cs

Obtiene un valor que indica si el campo es público.

public:
 property bool IsPublic { bool get(); };

public bool IsPublic { get; }

member this.IsPublic : bool

Public ReadOnly Property IsPublic As Boolean

Valor de propiedad

Boolean

true si este campo es público; en caso contrario, false.

Ejemplos

En el ejemplo siguiente se devuelve un valor que indica si el campo de la clase es público o privado.

using namespace System;
using namespace System::Reflection;

// Make two fields.
// private
public ref class Myfielda
{
private:
   String^ SomeField;

public:
   Myfielda()
      : SomeField( "private field" )
   {}


   property String^ Field 
   {
      String^ get()
      {
         return SomeField;
      }

   }

};


// public
public ref class Myfieldb
{
public:
   String^ SomeField;
   Myfieldb()
      : SomeField( "public field" )
   {}


   property String^ Field 
   {
      String^ get()
      {
         return SomeField;
      }

   }

};

int main()
{
   Console::WriteLine( "\nReflection.FieldInfo" );
   Myfielda^ myfielda = gcnew Myfielda;
   Myfieldb^ myfieldb = gcnew Myfieldb;
   
   // Get the Type and FieldInfo.
   Type^ MyTypea = Type::GetType( "Myfielda" );
   FieldInfo^ Myfieldinfoa = MyTypea->GetField( "SomeField", static_cast<BindingFlags>(BindingFlags::NonPublic | BindingFlags::Instance) );
   Type^ MyTypeb = Type::GetType( "Myfieldb" );
   FieldInfo^ Myfieldinfob = MyTypeb->GetField( "SomeField" );
   
   // Get and display the IsPublic and IsPrivate property values.
   Console::Write( "\n{0}.", MyTypea->FullName );
   Console::Write( "{0} - ", Myfieldinfoa->Name );
   Console::Write( "{0}", myfielda->Field );
   Console::Write( "\n   IsPublic = {0}", Myfieldinfoa->IsPublic );
   Console::Write( "\n   IsPrivate = {0}", Myfieldinfoa->IsPrivate );
   Console::Write( "\n{0}.", MyTypeb->FullName );
   Console::Write( "{0} - ", Myfieldinfob->Name );
   Console::Write( "{0};", myfieldb->Field );
   Console::Write( "\n   IsPublic = {0}", Myfieldinfob->IsPublic );
   Console::Write( "\n   IsPrivate = {0}", Myfieldinfob->IsPrivate );
   return 0;
}

using System;
using System.Reflection;

 // Make two fields.
public
    class Myfielda // private
{
    private string SomeField = "private field";
    public string Field
    {
        get{return SomeField;}
    }
}

public
    class Myfieldb // public
{
    public string SomeField = "public field";
}

public
    class Myfieldinfo
{
    public static int Main()
    {
        Console.WriteLine("\nReflection.FieldInfo");
        Myfielda Myfielda = new Myfielda();
        Myfieldb Myfieldb = new Myfieldb();

        // Get the Type and FieldInfo.
        Type MyTypea = typeof(Myfielda);
        FieldInfo Myfieldinfoa = MyTypea.GetField("SomeField",
            BindingFlags.NonPublic|BindingFlags.Instance);
        Type MyTypeb = typeof(Myfieldb);
        FieldInfo Myfieldinfob = MyTypeb.GetField("SomeField");

        // Get and display the IsPublic and IsPrivate property values.
        Console.Write("\n{0}.", MyTypea.FullName);
        Console.Write("{0} - ", Myfieldinfoa.Name);
        Console.Write("{0}", Myfielda.Field);
        Console.Write("\n   IsPublic = {0}", Myfieldinfoa.IsPublic);
        Console.Write("\n   IsPrivate = {0}", Myfieldinfoa.IsPrivate);

        Console.Write("\n{0}.", MyTypeb.FullName);
        Console.Write("{0} - ", Myfieldinfob.Name);
        Console.Write("{0};", Myfieldb.SomeField);
        Console.Write("\n   IsPublic = {0}", Myfieldinfob.IsPublic);
        Console.Write("\n   IsPrivate = {0}", Myfieldinfob.IsPrivate);

        return 0;
    }
}

Imports System.Reflection

' Make two fields.
Public Class Myfielda
    ' Make a private field.
    Private SomeField As String = "private field"

    Public ReadOnly Property Field() As String
        Get
            Return SomeField
        End Get
    End Property
End Class

Public Class Myfieldb
    ' Make a public field.
    Public SomeField As String = "public field"
End Class

Public Class Myfieldinfo

    Public Shared Function Main() As Integer
        Console.WriteLine("Reflection.FieldInfo")
        Console.WriteLine()
        Dim Myfielda As New Myfielda()
        Dim Myfieldb As New Myfieldb()

        ' Get the Type and FieldInfo.
        Dim MyTypea As Type = GetType(Myfielda)
        Dim Myfieldinfoa As FieldInfo = MyTypea.GetField("SomeField", _
            BindingFlags.NonPublic Or BindingFlags.Instance)
        Dim MyTypeb As Type = GetType(Myfieldb)
        Dim Myfieldinfob As FieldInfo = MyTypeb.GetField("SomeField")

        ' Get and display the IsPublic and IsPrivate property values.
        Console.WriteLine("{0}.{1} - {2}", MyTypea.FullName, Myfieldinfoa.Name, _
            Myfielda.Field)
        Console.WriteLine("   IsPublic = {0}", Myfieldinfoa.IsPublic)
        Console.WriteLine("   IsPrivate = {0}", Myfieldinfoa.IsPrivate)
        Console.WriteLine()
        Console.WriteLine("{0}.{1} - {2}", MyTypeb.FullName, Myfieldinfob.Name, _
            Myfieldb.SomeField)
        Console.WriteLine("   IsPublic = {0}", Myfieldinfob.IsPublic)
        Console.WriteLine("   IsPrivate = {0}", Myfieldinfob.IsPrivate)

        Return 0
    End Function 'Main
End Class

Comentarios

Los campos públicos son accesibles en todas partes donde están visibles sus clases correspondientes.

La IsPublic propiedad se establece cuando se establece el FieldAttributes.Public atributo .

Para obtener la IsPublic propiedad , obtenga primero la clase Type. TypeEn , obtenga .FieldInfo En , FieldInfoobtenga la IsPublic propiedad . Si el campo no es público, está protegido y no se puede acceder fácilmente. Para tener acceso a un campo no públicos, establezca en NonPublicBindingFlags , especifique BindingFlags.Instance o BindingFlags.Staticy úselo para el GetField método .

Consulte también

• FieldAttributes
• BindingFlags