MemberInfo.DeclaringType プロパティ

定義

このメンバーを宣言するクラスを取得します。Gets the class that declares this member.

public:
 abstract property Type ^ DeclaringType { Type ^ get(); };
public abstract Type DeclaringType { get; }
member this.DeclaringType : Type
Public MustOverride ReadOnly Property DeclaringType As Type

プロパティ値

このメンバーを宣言するクラスの Type オブジェクト。The Type object for the class that declares this member.

実装

次の例では、単一IValueGetValueメンバーを持つインターフェイスを定義します。The following example defines an interface, IValue, with a single member, GetValue. また、次の4つAのクラスを定義します。 IValueは、インターフェイスを実装する基本クラスです。基底クラスのA実装からを継承しGetValue 、の実装を非表示にします。 B``A GetValueはからA継承するだけで、はから継承し、そのメソッドをオーバーライドします。D CIt also defines four classes: A, a base class that implements the IValue interface; B, which inherits from A and hides its implementation of GetValue from the base class implementation; C, which simply inherits from A; and D, which inherits from A and overrides its GetValue method. 次に、型のMemberInfoメンバーごとに (からObject継承されたメンバーを含む) オブジェクトを取得し、そのDeclaringTypeプロパティの値を表示します。The example then retrieves a MemberInfo object for each member of the type (including members inherited from Object) and displays the value of its DeclaringType property.

using System;
using System.Reflection;

interface IValue 
{
   int GetValue() ;
};
 
class A : IValue 
{
   public virtual int GetValue() 
   { 
      return 0; 
   }
};
 
class B : A 
{
   public new int GetValue() 
   { 
      return 0; 
   }
};
 
class C : A 
{ };

class D : A
{
   public override int GetValue()
   {
      return 0;
   }
}

public class Example
{
   public static void Main()
   {
      // Get members of IValue interface.
      ShowMembersAndDeclaringTypes(typeof(IValue));
      Console.WriteLine();
      ShowMembersAndDeclaringTypes(typeof(A));
      Console.WriteLine();
      ShowMembersAndDeclaringTypes(typeof(B));
      Console.WriteLine();
      ShowMembersAndDeclaringTypes(typeof(C));
      Console.WriteLine();
      ShowMembersAndDeclaringTypes(typeof(D));
      Console.WriteLine();
   }

   private static void ShowMembersAndDeclaringTypes(Type t)
   {
      MemberInfo[] members = t.GetMembers();
      Console.WriteLine("{0} Members: ", t.Name);
      foreach (var member in members)
         Console.WriteLine("   {0}, Declaring type: {1}", 
                           member.Name, member.DeclaringType.Name); 
   }
}
// The example displays the following output:
//       IValue Members:
//          GetValue, Declaring type: IValue
//       
//       A Members:
//          GetValue, Declaring type: A
//          ToString, Declaring type: Object
//          Equals, Declaring type: Object
//          GetHashCode, Declaring type: Object
//          GetType, Declaring type: Object
//          .ctor, Declaring type: A
//       
//       B Members:
//          GetValue, Declaring type: B
//          GetValue, Declaring type: A
//          ToString, Declaring type: Object
//          Equals, Declaring type: Object
//          GetHashCode, Declaring type: Object
//          GetType, Declaring type: Object
//          .ctor, Declaring type: B
//       
//       C Members:
//          GetValue, Declaring type: A
//          ToString, Declaring type: Object
//          Equals, Declaring type: Object
//          GetHashCode, Declaring type: Object
//          GetType, Declaring type: Object
//          .ctor, Declaring type: C
//       
//       D Members:
//          GetValue, Declaring type: D
//          ToString, Declaring type: Object
//          Equals, Declaring type: Object
//          GetHashCode, Declaring type: Object
//          GetType, Declaring type: Object
//          .ctor, Declaring type: D
Imports System.Reflection

Interface IValue 
   Function GetValue() As Integer 
End Interface
 
Class A : Implements IValue 
   Public Overridable Function GetValue() As Integer _
                               Implements IValue.GetValue 
      Return 0 
   End Function
End Class
 
Class B : Inherits A 
   Public Shadows Function GetValue() As Integer 
      Return 0 
   End Function
End Class
 
Class C : Inherits A 
End Class

Class D : Inherits A
   Public Overrides Function GetValue() As Integer
      Return 0
   End Function
End Class

Public Module Example
   Public Sub Main()
      ' Get members of IValue interface.
      ShowMembersAndDeclaringTypes(GetType(IValue))
      Console.WriteLine()
      ShowMembersAndDeclaringTypes(GetType(A))
      Console.WriteLine()
      ShowMembersAndDeclaringTypes(GetType(B))
      Console.WriteLine()
      ShowMembersAndDeclaringTypes(GetType(C))
      Console.WriteLine()
      ShowMembersAndDeclaringTypes(GetType(D))
      Console.WriteLine()
   End Sub

   Private Sub ShowMembersAndDeclaringTypes(t As Type)
      Dim members() As MemberInfo = t.GetMembers()
      Console.WriteLine("{0} Members: ", t.Name)
      For Each member In members
         Console.WriteLine("   {0}, Declaring type: {1}", 
                           member.Name, member.DeclaringType.Name)
      Next                      
   End Sub
End Module
' The example displays the following output:
'       IValue Members:
'          GetValue, Declaring type: IValue
'       
'       A Members:
'          GetValue, Declaring type: A
'          ToString, Declaring type: Object
'          Equals, Declaring type: Object
'          GetHashCode, Declaring type: Object
'          GetType, Declaring type: Object
'          .ctor, Declaring type: A
'       
'       B Members:
'          GetValue, Declaring type: B
'          GetValue, Declaring type: A
'          ToString, Declaring type: Object
'          Equals, Declaring type: Object
'          GetHashCode, Declaring type: Object
'          GetType, Declaring type: Object
'          .ctor, Declaring type: B
'       
'       C Members:
'          GetValue, Declaring type: A
'          ToString, Declaring type: Object
'          Equals, Declaring type: Object
'          GetHashCode, Declaring type: Object
'          GetType, Declaring type: Object
'          .ctor, Declaring type: C
'       
'       D Members:
'          GetValue, Declaring type: D
'          ToString, Declaring type: Object
'          Equals, Declaring type: Object
'          GetHashCode, Declaring type: Object
'          GetType, Declaring type: Object
'          .ctor, Declaring type: D

A.GetValueD宣言する型はAであり、 B 2 つGetValueのメソッドが含まれてAいます。 B1 つはで、もう 1 D.GetValueつはによって宣言され、の宣言型はです。Note that the declaring type of A.GetValue is A, that B includes two GetValue methods, one declared by A and one by B, and that the declaring type of D.GetValue is D.

注意

DeclaringTypeメンバー名と宣言する型の名前だけを返します。DeclaringType returns only the member names and the names of their declaring types. メンバー名とそのプロトタイプを返すには、 MemberInfo.ToStringを呼び出します。To return the member names with their prototypes, call MemberInfo.ToString.

注釈

プロパティDeclaringTypeは、このメンバーを宣言Typeする型のオブジェクトへの参照を取得します。The DeclaringType property retrieves a reference to the Type object for the type that declares this member. 型のメンバーは、型によって宣言されているか、基本型から継承TypeされているDeclaringTypeため、プロパティによって返されるTypeオブジェクトが、現在MemberInfoのオブジェクトを取得するために使用されるオブジェクトと同じではない可能性があります。A member of a type is either declared by the type or inherited from a base type, so the Type object returned by the DeclaringType property might not be the same as the Type object used to obtain the current MemberInfo object.

  • このType DeclaringTypeオブジェクトを取得したオブジェクトがこのメンバーを宣言していない場合、プロパティはその基本型の1つを表します。 MemberInfoIf the Type object from which this MemberInfo object was obtained did not declare this member, the DeclaringType property will represent one of its base types.

  • オブジェクトがグローバルメンバーである場合 (つまり、モジュールのグローバルメソッドを返すModule.GetMethodsメソッドから取得された場合) null、返さDeclaringTypeれるはになります。 MemberInfoIf the MemberInfo object is a global member (that is, if it was obtained from the Module.GetMethods method, which returns global methods on a module), the returned DeclaringType will be null.

適用対象