FieldInfo.IsPublic Properti

Definisi

Ruang nama:

System.Reflection

Rakitan:

System.Runtime.dll

Sumber:

FieldInfo.cs

Mendapatkan nilai yang menunjukkan apakah bidang bersifat publik.

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

public bool IsPublic { get; }

member this.IsPublic : bool

Public ReadOnly Property IsPublic As Boolean

Nilai Properti

Boolean

true jika bidang ini bersifat publik; jika tidak, false.

Contoh

Contoh berikut mengembalikan nilai yang menunjukkan apakah bidang kelas bersifat publik atau privat atau tidak.

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

Keterangan

Bidang publik dapat diakses di mana saja kelas yang sesuai terlihat.

Properti IsPublic diatur saat FieldAttributes.Public atribut diatur.

Untuk mendapatkan IsPublic properti , pertama-tama dapatkan kelas Type. TypeDari , dapatkan FieldInfo. FieldInfoDari , dapatkan IsPublic properti . Jika bidang selain publik, bidang dilindungi dan tidak dapat diakses dengan mudah. Untuk mengakses bidang nonpublik, atur ke BindingFlagsNonPublic, tentukan salah satu BindingFlags.Instance atau BindingFlags.Static, dan gunakan ini untuk GetField metode .

Lihat juga

• FieldAttributes
• BindingFlags