EnumBuilder.GetCustomAttributes Metoda

Reference

Definice

Obor názvů:: System.Reflection.Emit

Sestavení:: System.Reflection.Emit.dll

Sestavení:: mscorlib.dll

Sestavení:: netstandard.dll

Balíček:: System.Reflection.Emit v4.7.0

Důležité

Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.

Vrátí vlastní atributy definované pro tento konstruktor.

Přetížení

GetCustomAttributes(Boolean)	Vrátí všechny vlastní atributy definované pro tento konstruktor.
GetCustomAttributes(Type, Boolean)	Vrátí vlastní atributy identifikované daným typem.

GetCustomAttributes(Boolean)

Zdroj:: EnumBuilder.cs

Vrátí všechny vlastní atributy definované pro tento konstruktor.

public:
 override cli::array <System::Object ^> ^ GetCustomAttributes(bool inherit);

public override object[] GetCustomAttributes (bool inherit);

override this.GetCustomAttributes : bool -> obj[]

Public Overrides Function GetCustomAttributes (inherit As Boolean) As Object()

Parametry

inherit: Boolean

Určuje, zda má být prohledány řetězce dědičnosti tohoto člena a nalezeny atributy.

Návraty

Object[]

Vrátí pole objektů představujících všechny vlastní atributy konstruktoru reprezentované touto ConstructorBuilder instancí.

Výjimky

NotSupportedException

Tato metoda není v současné době podporována u typů, které nejsou dokončeny.

Poznámky

Alternativním řešením je, že pokud chcete načíst vlastní atributy dokončeného typu, načtěte typ pomocí Type.GetType a zavolejte GetCustomAttributes na vrácený Type.

Následující ukázka kódu znázorňuje použití v GetCustomAttribute kontextu .EnumBuilder

using namespace System;
using namespace System::Threading;
using namespace System::Reflection;
using namespace System::Reflection::Emit;

[AttributeUsage(AttributeTargets::All,AllowMultiple=false)]
public ref class MyAttribute: public Attribute
{
public:
   bool myBoolValue;
   MyAttribute( bool myBool )
   {
      this->myBoolValue = myBool;
   }
};

ref class MyApplication
{
private:
   static EnumBuilder^ myEnumBuilder;

public:
   static void Main()
   {
      try
      {
         CreateCallee( Thread::GetDomain() );
         array<Object^>^myAttributesArray = myEnumBuilder->GetCustomAttributes( true );
         
         // Read the attributes and display them on the console.
         Console::WriteLine( "Custom attribute contains: " );
         for ( int index = 0; index < myAttributesArray->Length; index++ )
         {
            if ( dynamic_cast<MyAttribute^>(myAttributesArray[ index ]) )
            {
               Console::WriteLine( "myBoolValue: {0}", (dynamic_cast<MyAttribute^>(myAttributesArray[ index ]))->myBoolValue );
            }
         }
      }
      catch ( Exception^ e ) 
      {
         Console::WriteLine( "The following exception is raised:{0}", e->Message );
      }

   }

private:
   static void CreateCallee( AppDomain^ domain )
   {
      AssemblyName^ myAssemblyName = gcnew AssemblyName;

      // Create a name for the assembly.
      myAssemblyName->Name = "EmittedAssembly";

      // Create the dynamic assembly.
      AssemblyBuilder^ myAssemblyBuilder = domain->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::Run );
      Type^ myType = MyAttribute::typeid;
      array<Type^>^temp0 = {bool::typeid};
      ConstructorInfo^ myInfo = myType->GetConstructor( temp0 );

      // Create a dynamic module.
      ModuleBuilder^ myModuleBuilder = myAssemblyBuilder->DefineDynamicModule( "EmittedModule" );

      // Create a dynamic Enum.
      myEnumBuilder = myModuleBuilder->DefineEnum( "MyNamespace.MyEnum", TypeAttributes::Public, Int32::typeid );
      FieldBuilder^ myFieldBuilder1 = myEnumBuilder->DefineLiteral( "FieldOne", 1 );
      FieldBuilder^ myFieldBuilder2 = myEnumBuilder->DefineLiteral( "FieldTwo", 2 );
      myEnumBuilder->CreateType();
      array<Byte>^temp1 = {01,00,01};
      myEnumBuilder->SetCustomAttribute( myInfo, temp1 );
   }
};

int main()
{
   MyApplication::Main();
}

using System;
using System.Threading;
using System.Reflection;
using System.Reflection.Emit;

[AttributeUsage(AttributeTargets.All, AllowMultiple = false)]
public class MyAttribute2 : Attribute
{
   public bool myBoolValue;

   public MyAttribute2(bool myBool)
   {
      this.myBoolValue = myBool;
   }
}

class MyApplication2
{
   static EnumBuilder myEnumBuilder;

   public static void Main()
   {
      try
      {
         CreateCallee(Thread.GetDomain());
         object[] myAttributesArray = myEnumBuilder.GetCustomAttributes(true);

         // Read the attributes and display them on the console.
         Console.WriteLine("Custom attribute contains: ");
         for(int index=0; index < myAttributesArray.Length; index++)
         {
            if(myAttributesArray[index] is MyAttribute2)
            {
               Console.WriteLine("myBoolValue: " +
                                       ((MyAttribute2)myAttributesArray[index]).myBoolValue);
            }
         }
      }
      catch(Exception e)
      {
         Console.WriteLine("The following exception is raised:" +e.Message);
      }
   }

   private static void CreateCallee(AppDomain domain)
   {
      AssemblyName myAssemblyName = new AssemblyName();
      // Create a name for the assembly.
      myAssemblyName.Name = "EmittedAssembly";

      // Create the dynamic assembly.
      AssemblyBuilder myAssemblyBuilder
                  = domain.DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.Run);

      Type myType = typeof(MyAttribute2);
      ConstructorInfo myInfo = myType.GetConstructor(new Type[]{typeof(bool)});

      // Create a dynamic module.
      ModuleBuilder myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("EmittedModule");

      // Create a dynamic Enum.
      myEnumBuilder =
         myModuleBuilder.DefineEnum("MyNamespace.MyEnum", TypeAttributes.Public, typeof(Int32));

      FieldBuilder myFieldBuilder1 = myEnumBuilder.DefineLiteral("FieldOne", 1);
      FieldBuilder myFieldBuilder2 = myEnumBuilder.DefineLiteral("FieldTwo", 2);

      myEnumBuilder.CreateType();
      myEnumBuilder.SetCustomAttribute(myInfo, new byte[]{01,00,01});
   }
}

Imports System.Threading
Imports System.Reflection
Imports System.Reflection.Emit

<AttributeUsage(AttributeTargets.All, AllowMultiple := False)>  _
Public Class MyAttribute
   Inherits Attribute
   Public myBoolValue As Boolean
   
   Public Sub New(myBool As Boolean)
      Me.myBoolValue = myBool
   End Sub
End Class

Class MyApplication
   Private Shared myEnumBuilder As EnumBuilder
   
   Public Shared Sub Main()
      Try
         CreateCallee(Thread.GetDomain())
         Dim myAttributesArray As Object() = myEnumBuilder.GetCustomAttributes(True)
         
         ' Read the attributes and display them on the console.
         Console.WriteLine("Custom attribute contains: ")
         Dim index As Integer
         For index = 0 To myAttributesArray.Length - 1
            If TypeOf myAttributesArray(index) Is MyAttribute Then
               Console.WriteLine("myBoolValue: " + CType(myAttributesArray(index), MyAttribute). _
                                                                           myBoolValue.ToString())
            End If
         Next index
      Catch e As Exception
         Console.WriteLine("The following exception is raised:" + e.Message)
      End Try
   End Sub
   
   Private Shared Sub CreateCallee(domain As AppDomain)
      Dim myAssemblyName As New AssemblyName()
      ' Create a name for the assembly.
      myAssemblyName.Name = "EmittedAssembly"
      
      ' Create the dynamic assembly.
      Dim myAssemblyBuilder As AssemblyBuilder = domain.DefineDynamicAssembly(myAssemblyName, _
                                                                  AssemblyBuilderAccess.Run)
      
      Dim myType As Type = GetType(MyAttribute)
      Dim myInfo As ConstructorInfo = myType.GetConstructor(New Type() {GetType(Boolean)})
      
      ' Create a dynamic module.
      Dim myModuleBuilder As ModuleBuilder = myAssemblyBuilder.DefineDynamicModule("EmittedModule")
      
      ' Create a dynamic Enum.
      myEnumBuilder = myModuleBuilder.DefineEnum("MyNamespace.MyEnum", TypeAttributes.Public, _
                                                                              GetType(Int32))
      
      Dim myFieldBuilder1 As FieldBuilder = myEnumBuilder.DefineLiteral("FieldOne", 1)
      Dim myFieldBuilder2 As FieldBuilder = myEnumBuilder.DefineLiteral("FieldTwo", 2)
      
      myEnumBuilder.CreateType()
      myEnumBuilder.SetCustomAttribute(myInfo, New Byte() {1, 0, 1})
   End Sub
End Class

Platí pro

GetCustomAttributes(Type, Boolean)

Zdroj:: EnumBuilder.cs

Vrátí vlastní atributy identifikované daným typem.

public:
 override cli::array <System::Object ^> ^ GetCustomAttributes(Type ^ attributeType, bool inherit);

public override object[] GetCustomAttributes (Type attributeType, bool inherit);

override this.GetCustomAttributes : Type * bool -> obj[]

Public Overrides Function GetCustomAttributes (attributeType As Type, inherit As Boolean) As Object()

Parametry

attributeType: Type

Objekt Type , na který jsou použity vlastní atributy.

inherit: Boolean

Určuje, zda má být prohledány řetězce dědičnosti tohoto člena a nalezeny atributy.

Návraty

Object[]

Vrátí pole objektů představujících atributy tohoto konstruktoru, které jsou typu TypeattributeType.

Výjimky

NotSupportedException

Tato metoda není v současné době podporována u typů, které nejsou dokončeny.

Poznámky

Alternativním řešením je, že pokud chcete načíst vlastní atributy dokončeného typu, načtěte typ pomocí Type.GetType a zavolejte MemberInfo.GetCustomAttributes na vrácený Type.

Následující ukázka kódu znázorňuje použití v GetCustomAttribute kontextu .EnumBuilder


[AttributeUsage(AttributeTargets::All,AllowMultiple=false)]
public ref class MyAttribute: public Attribute
{
public:
   String^ myString;
   int myInteger;
   MyAttribute( String^ myString1, int myInteger1 )
   {
      this->myString = myString1;
      this->myInteger = myInteger1;
   }

};

ref class MyApplication
{
private:
   static AssemblyBuilder^ myAssemblyBuilder;
   static EnumBuilder^ myEnumBuilder;

public:
   static void Main()
   {
      try
      {
         CreateCallee( Thread::GetDomain() );
         if ( myEnumBuilder->IsDefined( MyAttribute::typeid, false ) )
         {
            array<Object^>^myAttributesArray = myEnumBuilder->GetCustomAttributes( MyAttribute::typeid, false );
            Console::WriteLine( "Custom attribute contains: " );

            // Read the attributes and display them on the console.
            for ( int index = 0; index < myAttributesArray->Length; index++ )
            {
               if ( dynamic_cast<MyAttribute^>(myAttributesArray[ index ]) )
               {
                  Console::WriteLine( "The value of myString  is: {0}", (dynamic_cast<MyAttribute^>(myAttributesArray[ index ]))->myString );
                  Console::WriteLine( "The value of myInteger is: {0}", (dynamic_cast<MyAttribute^>(myAttributesArray[ index ]))->myInteger );
               }
            }
         }
         else
         {
            Console::WriteLine( "Custom Attributes are not set for the EnumBuilder" );
         }
      }
      catch ( Exception^ e ) 
      {
         Console::WriteLine( "The following exception is raised:{0}", e->Message );
      }

   }

private:
   static void CreateCallee( AppDomain^ domain )
   {
      // Create a name for the assembly.
      AssemblyName^ myAssemblyName = gcnew AssemblyName;
      myAssemblyName->Name = "EmittedAssembly";

      // Create the dynamic assembly.
      myAssemblyBuilder = domain->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::Run );
      Type^ myType = MyAttribute::typeid;
      array<Type^>^temp0 = {String::typeid,int::typeid};
      ConstructorInfo^ myInfo = myType->GetConstructor( temp0 );
      array<Object^>^temp1 = {"Hello",2};
      CustomAttributeBuilder^ myCustomAttributeBuilder = gcnew CustomAttributeBuilder( myInfo,temp1 );

      // Create a dynamic module.
      ModuleBuilder^ myModuleBuilder = myAssemblyBuilder->DefineDynamicModule( "EmittedModule" );

      // Create a dynamic Enum.
      myEnumBuilder = myModuleBuilder->DefineEnum( "MyNamespace.MyEnum", TypeAttributes::Public, Int32::typeid );
      FieldBuilder^ myFieldBuilder1 = myEnumBuilder->DefineLiteral( "FieldOne", 1 );
      FieldBuilder^ myFieldBuilder2 = myEnumBuilder->DefineLiteral( "FieldTwo", 2 );
      myEnumBuilder->CreateType();
      myEnumBuilder->SetCustomAttribute( myCustomAttributeBuilder );
   }
};

int main()
{
   MyApplication::Main();
}

[AttributeUsage(AttributeTargets.All, AllowMultiple = false)]
public class MyAttribute : Attribute
{
   public String myString;
   public int myInteger;

   public MyAttribute(String myString1, int myInteger1)
   {
      this.myString = myString1;
      this.myInteger = myInteger1;
   }
}

class MyApplication
{
   static AssemblyBuilder myAssemblyBuilder;
   static EnumBuilder myEnumBuilder;

   public static void Main()
   {
      try
      {
         CreateCallee(Thread.GetDomain());
         if(myEnumBuilder.IsDefined(typeof(MyAttribute),false))
         {
            object[] myAttributesArray = myEnumBuilder.GetCustomAttributes(typeof(MyAttribute),false);
            Console.WriteLine("Custom attribute contains: ");
            // Read the attributes and display them on the console.
            for(int index=0; index < myAttributesArray.Length; index++)
            {
               if(myAttributesArray[index] is MyAttribute)
               {
                  Console.WriteLine("The value of myString  is: "
                                    + ((MyAttribute)myAttributesArray[index]).myString);
                  Console.WriteLine("The value of myInteger is: "
                                    + ((MyAttribute)myAttributesArray[index]).myInteger);
               }
            }
         }
         else
         {
            Console.WriteLine("Custom Attributes are not set for the EnumBuilder");
         }
      }
      catch(Exception e)
      {
         Console.WriteLine("The following exception is raised:" +e.Message);
      }
  }

   private static void CreateCallee(AppDomain domain)
   {
      // Create a name for the assembly.
      AssemblyName myAssemblyName = new AssemblyName();
      myAssemblyName.Name = "EmittedAssembly";

      // Create the dynamic assembly.
      myAssemblyBuilder = domain.DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.Run);

      Type myType = typeof(MyAttribute);
      ConstructorInfo myInfo = myType.GetConstructor(new Type[2]{typeof(String), typeof(int)});
      CustomAttributeBuilder myCustomAttributeBuilder =
                                    new CustomAttributeBuilder(myInfo, new object[2]{"Hello", 2});

      // Create a dynamic module.
      ModuleBuilder myModuleBuilder = myAssemblyBuilder.DefineDynamicModule("EmittedModule");

      // Create a dynamic Enum.
      myEnumBuilder = myModuleBuilder.DefineEnum("MyNamespace.MyEnum", TypeAttributes.Public, typeof(Int32));

      FieldBuilder myFieldBuilder1 = myEnumBuilder.DefineLiteral("FieldOne", 1);
      FieldBuilder myFieldBuilder2 = myEnumBuilder.DefineLiteral("FieldTwo", 2);

      myEnumBuilder.CreateType();
      myEnumBuilder.SetCustomAttribute(myCustomAttributeBuilder);
   }
}

<AttributeUsage(AttributeTargets.All, AllowMultiple := False)>  _
Public Class MyAttribute
   Inherits Attribute
   Public myString As String
   Public myInteger As Integer

   Public Sub New(myString1 As String, myInteger1 As Integer)
      Me.myString = myString1
      Me.myInteger = myInteger1
   End Sub
End Class

Class MyApplication
   Private Shared myAssemblyBuilder As AssemblyBuilder
   Private Shared myEnumBuilder As EnumBuilder

   Public Shared Sub Main()
      Try
         CreateCallee(Thread.GetDomain())
         If myEnumBuilder.IsDefined(GetType(MyAttribute), False) Then
            Dim myAttributesArray As Object() = myEnumBuilder.GetCustomAttributes _
                                                      (GetType(MyAttribute), False)
            Console.WriteLine("Custom attribute contains: ")
            ' Read the attributes and display them on the console.
            Dim index As Integer
            For index = 0 To myAttributesArray.Length - 1
               If TypeOf myAttributesArray(index) Is MyAttribute Then
                  Console.WriteLine("The value of myString  is: " + CType(myAttributesArray(index), _
                                                                           MyAttribute).myString)
                  Console.WriteLine("The value of myInteger is: " + CType(myAttributesArray(index), _
                                                               MyAttribute).myInteger.ToString())
               End If
            Next index
         Else
            Console.WriteLine("Custom Attributes are not set for the EnumBuilder")
         End If
      Catch e As Exception
         Console.WriteLine("The following exception is raised:" + e.Message)
      End Try
   End Sub

   Private Shared Sub CreateCallee(domain As AppDomain)
      ' Create a name for the assembly.
      Dim myAssemblyName As New AssemblyName()
      myAssemblyName.Name = "EmittedAssembly"

      ' Create the dynamic assembly.
      myAssemblyBuilder = domain.DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.Run)

      Dim myType As Type = GetType(MyAttribute)
      Dim myInfo As ConstructorInfo = myType.GetConstructor(New Type(1) {GetType(String), _
                                                                           GetType(Integer)})
      Dim myCustomAttributeBuilder As New CustomAttributeBuilder(myInfo, New Object(1) {"Hello", 2})

      ' Create a dynamic module.
      Dim myModuleBuilder As ModuleBuilder = myAssemblyBuilder.DefineDynamicModule("EmittedModule")

      ' Create a dynamic Enum.
      myEnumBuilder = myModuleBuilder.DefineEnum("MyNamespace.MyEnum", TypeAttributes.Public, _
                                                                                 GetType(Int32))

      Dim myFieldBuilder1 As FieldBuilder = myEnumBuilder.DefineLiteral("FieldOne", 1)
      Dim myFieldBuilder2 As FieldBuilder = myEnumBuilder.DefineLiteral("FieldTwo", 2)

      myEnumBuilder.CreateType()
      myEnumBuilder.SetCustomAttribute(myCustomAttributeBuilder)
   End Sub
End Class

Platí pro

Sdílet prostřednictvím

EnumBuilder.GetCustomAttributes Metoda

Definice

Přetížení

GetCustomAttributes(Boolean)

Parametry

Návraty

Výjimky

Poznámky

Platí pro

GetCustomAttributes(Type, Boolean)

Parametry

Návraty

Výjimky

Poznámky

Platí pro

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