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; }
public abstract Type? DeclaringType { get; }
member this.DeclaringType : Type
Public MustOverride ReadOnly Property DeclaringType As Type

Hodnota vlastnosti

Type

TypeObjekt 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, GetValue .The following example defines an interface, IValue, with a single member, GetValue. Definuje také čtyři třídy: A , základní třídu, která implementuje rozhraní, IValue B které dědí z A a skrývá implementaci GetValue z implementace základní třídy; C , která jednoduše dědí z a A D , která dědí z A a Přepisuje její GetValue metodu.It 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 typ A.GetValue je A , který B obsahuje dvě GetValue metody, jeden deklarovaný pomocí A a jeden podle a B který deklaruje typ D.GetValue 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

DeclaringType Vrátí 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, zavolejte MemberInfo.ToString .To return the member names with their prototypes, call MemberInfo.ToString.

Poznámky

DeclaringTypeVlastnost načte odkaz na Type objekt pro typ, který deklaruje tohoto člena.The DeclaringType property retrieves a reference to the Type object for the type that declares this member. Člen typu je deklarován buď typem, nebo zděděným ze základního typu, takže Type objekt vrácený DeclaringType vlastností nemusí být stejný jako Type 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 Type objekt, ze kterého MemberInfo byl tento objekt získán, nedeklaroval tohoto člena, DeclaringType vlastnost bude představovat jeden z jeho základních typů.If 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 MemberInfo je objekt globálním členem (to znamená, pokud byl získán z Module.GetMethods metody, která vrací globální metody v modulu), bude vráceno DeclaringType null .If 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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