MemberInfo.DeclaringType Vlastnost

Definice

Získá třídu, která deklaruje tohoto člena.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

Hodnota vlastnosti

Type Objekt pro třídu, která deklaruje tohoto člena.The Type object for the class that declares this member.

Implementuje

Příklady

Následující příklad definuje rozhraní IValue, s jedním členem,. GetValueThe following example defines an interface, IValue, with a single member, GetValue. Definuje také čtyři třídy: A, základní třídu, která IValue implementuje rozhraní; , který dědí z A GetValue a skrývá implementaci z implementace základní třídy; B A D A , který jednoduše dědí z, a, který dědí z a Přepisuje jeho GetValue metodu. 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. Příklad následně načte MemberInfo objekt pro každého člena typu (včetně členů zděděných z Object) a zobrazí hodnotu jeho DeclaringType vlastnosti.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

Všimněte si, že deklarující A.GetValue typ Aje, B který obsahuje GetValue dvě metody, jeden deklarovaný A D.GetValue pomocí a jeden Bpodle a který deklaruje typ je D.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.

Poznámka

DeclaringTypeVrátí pouze názvy členů a názvy jejich deklarující typy.DeclaringType returns only the member names and the names of their declaring types. Chcete-li vrátit názvy členů pomocí jejich prototypů, MemberInfo.ToStringzavolejte.To return the member names with their prototypes, call MemberInfo.ToString.

Poznámky

Vlastnost načte odkaz Type na objekt pro typ, který deklaruje tohoto člena. DeclaringTypeThe DeclaringType property retrieves a reference to the Type object for the type that declares this member. Člen typu je deklarován buď typem, Type nebo zděděným ze základního typu, takže objekt vrácený DeclaringType vlastností nemusí Type být stejný jako objekt použitý k získání aktuálního MemberInfo objektu.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.

  • Pokud objekt, ze kterého byl MemberInfo tento objekt získán, DeclaringType nedeklaroval tohoto člena, vlastnost bude představovat jeden z jeho základních typů. TypeIf 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.

  • Pokud je Module.GetMethods DeclaringType nullobjekt globálním členem (to znamená, pokud byl získán z metody, která vrací globální metody v modulu), bude vráceno. 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.

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