AssemblyBuilder.SetCustomAttribute Methode

Quelle:

AssemblyBuilder.cs

Quelle:

AssemblyBuilder.cs

Quelle:

AssemblyBuilder.cs

public:
 void SetCustomAttribute(System::Reflection::Emit::CustomAttributeBuilder ^ customBuilder);

public void SetCustomAttribute (System.Reflection.Emit.CustomAttributeBuilder customBuilder);

member this.SetCustomAttribute : System.Reflection.Emit.CustomAttributeBuilder -> unit

Public Sub SetCustomAttribute (customBuilder As CustomAttributeBuilder)

Parameter

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird die Verwendung von SetCustomAttribute in AssemblyBuilderveranschaulicht, wobei ein verwendet wird CustomAttributeBuilder.

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

Type^ CreateCallee( AppDomain^ domain )
{
   AssemblyName^ myAssemblyName = gcnew AssemblyName;
   myAssemblyName->Name = "EmittedAssembly";
   AssemblyBuilder^ myAssembly = domain->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::Run );
   Type^ myType = MyAttribute::typeid;
   array<Type^>^temp0 = {String::typeid,int::typeid};
   ConstructorInfo^ infoConstructor = myType->GetConstructor( temp0 );
   array<Object^>^temp1 = {"Hello",2};
   CustomAttributeBuilder^ attributeBuilder = gcnew CustomAttributeBuilder( infoConstructor,temp1 );
   myAssembly->SetCustomAttribute( attributeBuilder );
   ModuleBuilder^ myModule = myAssembly->DefineDynamicModule( "EmittedModule" );
   
   // Define a public class named "HelloWorld" in the assembly.
   TypeBuilder^ helloWorldClass = myModule->DefineType( "HelloWorld", TypeAttributes::Public );
   return (helloWorldClass->CreateType());
}

int main()
{
   Type^ customAttribute = CreateCallee( Thread::GetDomain() );
   array<Object^>^attributes = customAttribute->Assembly->GetCustomAttributes( true );
   Console::WriteLine( "MyAttribute custom attribute contains : " );
   for ( int index = 0; index < attributes->Length; index++ )
   {
      if ( dynamic_cast<MyAttribute^>(attributes[ index ]) )
      {
         Console::WriteLine( "s : {0}", (dynamic_cast<MyAttribute^>(attributes[ index ]))->s );
         Console::WriteLine( "x : {0}", (dynamic_cast<MyAttribute^>(attributes[ index ]))->x );
         break;
      }
   }
}

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

   public MyAttribute(String s, int x)
   {
      this.s = s;
      this.x = x;
   }
}

class MyApplication
{
   public static void Main()
   {
      Type customAttribute = CreateCallee(Thread.GetDomain());
      object[] attributes = customAttribute.Assembly.GetCustomAttributes(true);
      Console.WriteLine("MyAttribute custom attribute contains : ");
      for(int index=0; index < attributes.Length; index++)
      {
         if(attributes[index] is MyAttribute)
         {
            Console.WriteLine("s : " + ((MyAttribute)attributes[index]).s);
            Console.WriteLine("x : " + ((MyAttribute)attributes[index]).x);
            break;
         }
      }
   }

   private static Type CreateCallee(AppDomain domain)
   {
      AssemblyName myAssemblyName = new AssemblyName();
      myAssemblyName.Name = "EmittedAssembly";
      AssemblyBuilder myAssembly = domain.DefineDynamicAssembly(myAssemblyName,
         AssemblyBuilderAccess.Run);
      Type myType = typeof(MyAttribute);
      ConstructorInfo infoConstructor = myType.GetConstructor(new Type[2]{typeof(String), typeof(int)});
      CustomAttributeBuilder attributeBuilder =
         new CustomAttributeBuilder(infoConstructor, new object[2]{"Hello", 2});
      myAssembly.SetCustomAttribute(attributeBuilder);
      ModuleBuilder myModule = myAssembly.DefineDynamicModule("EmittedModule");
      // Define a public class named "HelloWorld" in the assembly.
      TypeBuilder helloWorldClass = myModule.DefineType("HelloWorld", TypeAttributes.Public);

      return(helloWorldClass.CreateType());
  }
}

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

   Public Sub New(s As String, x As Integer)
      Me.s = s
      Me.x = x
   End Sub
End Class

Class MyApplication
   Public Shared Sub Main()
      Dim customAttribute As Type = CreateCallee(Thread.GetDomain())
      Dim attributes As Object() = customAttribute.Assembly.GetCustomAttributes(True)
      Console.WriteLine("MyAttribute custom attribute contains : ")
      Dim index As Integer
      For index = 0 To attributes.Length - 1
         If TypeOf attributes(index) Is MyAttribute Then
            Console.WriteLine("s : " + CType(attributes(index), MyAttribute).s)
            Console.WriteLine("x : " + CType(attributes(index), MyAttribute).x.ToString())
            Exit For
         End If
      Next index
   End Sub

   Private Shared Function CreateCallee(domain As AppDomain) As Type
      Dim myAssemblyName As New AssemblyName()
      myAssemblyName.Name = "EmittedAssembly"
      Dim myAssembly As AssemblyBuilder = _
                     domain.DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.Run)
      Dim myType As Type = GetType(MyAttribute)
      Dim infoConstructor As ConstructorInfo = _
                     myType.GetConstructor(New Type(1) {GetType(String), GetType(Integer)})
      Dim attributeBuilder As New CustomAttributeBuilder(infoConstructor, New Object(1) {"Hello", 2})
      myAssembly.SetCustomAttribute(attributeBuilder)
      Dim myModule As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")
      ' Define a public class named "HelloWorld" in the assembly.
      Dim helloWorldClass As TypeBuilder = myModule.DefineType("HelloWorld", TypeAttributes.Public)
      Return helloWorldClass.CreateType()
   End Function 'CreateCallee
End Class

Hinweise

Quelle:

AssemblyBuilder.cs

Quelle:

AssemblyBuilder.cs

Quelle:

AssemblyBuilder.cs

public:
 void SetCustomAttribute(System::Reflection::ConstructorInfo ^ con, cli::array <System::Byte> ^ binaryAttribute);

public void SetCustomAttribute (System.Reflection.ConstructorInfo con, byte[] binaryAttribute);

[System.Runtime.InteropServices.ComVisible(true)]
public void SetCustomAttribute (System.Reflection.ConstructorInfo con, byte[] binaryAttribute);

member this.SetCustomAttribute : System.Reflection.ConstructorInfo * byte[] -> unit

[<System.Runtime.InteropServices.ComVisible(true)>]
member this.SetCustomAttribute : System.Reflection.ConstructorInfo * byte[] -> unit

Public Sub SetCustomAttribute (con As ConstructorInfo, binaryAttribute As Byte())

Parameter

Attribute

ComVisibleAttribute

Ausnahmen

Beispiele

Das folgende Codebeispiel veranschaulicht die Verwendung von SetCustomAttribute zum Anfügen eines benutzerdefinierten Attributs an eine dynamisch generierte Assembly.

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 s;
   MyAttribute( bool s )
   {
      this->s = s;
   }
};

Type^ CreateCallee( AppDomain^ domain )
{
   AssemblyName^ myAssemblyName = gcnew AssemblyName;
   myAssemblyName->Name = "EmittedAssembly";
   AssemblyBuilder^ myAssembly = domain->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::Run );
   Type^ myType = MyAttribute::typeid;
   array<Type^>^temp0 = {bool::typeid};
   ConstructorInfo^ infoConstructor = myType->GetConstructor( temp0 );
   array<Byte>^temp1 = {01,00,01};
   myAssembly->SetCustomAttribute( infoConstructor, temp1 );
   ModuleBuilder^ myModule = myAssembly->DefineDynamicModule( "EmittedModule" );

   // Define a public class named "HelloWorld" in the assembly.
   TypeBuilder^ helloWorldClass = myModule->DefineType( "HelloWorld", TypeAttributes::Public );
   return (helloWorldClass->CreateType());
}

int main()
{
   Type^ customAttribute = CreateCallee( Thread::GetDomain() );
   array<Object^>^attributes = customAttribute->Assembly->GetCustomAttributes( true );
   Console::WriteLine( "MyAttribute custom attribute contains : " );
   for ( int index = 0; index < attributes->Length; index++ )
   {
      if ( dynamic_cast<MyAttribute^>(attributes[ index ]) )
      {
         Console::WriteLine( "s : {0}", (dynamic_cast<MyAttribute^>(attributes[ index ]))->s );
         break;
      }
   }
}

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

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

   public MyAttribute(bool s)
   {
      this.s = s;
   }
}

class MyApplication
{
   public static void Main()
   {
      Type customAttribute = CreateCallee(Thread.GetDomain());
      object[] attributes = customAttribute.Assembly.GetCustomAttributes(true);
      Console.WriteLine("MyAttribute custom attribute contains : ");
      for(int index=0; index < attributes.Length; index++)
      {
         if(attributes[index] is MyAttribute)
         {
            Console.WriteLine("s : " + ((MyAttribute)attributes[index]).s);
            break;
         }
      }
   }

   private static Type CreateCallee(AppDomain domain)
   {
      AssemblyName myAssemblyName = new AssemblyName();
      myAssemblyName.Name = "EmittedAssembly";
      AssemblyBuilder myAssembly = domain.DefineDynamicAssembly(myAssemblyName,
         AssemblyBuilderAccess.Run);
      Type myType = typeof(MyAttribute);
      ConstructorInfo infoConstructor = myType.GetConstructor(new Type[]{typeof(bool)});
      myAssembly.SetCustomAttribute(infoConstructor, new byte[]{01,00,01});
      ModuleBuilder myModule = myAssembly.DefineDynamicModule("EmittedModule");
      // Define a public class named "HelloWorld" in the assembly.
      TypeBuilder helloWorldClass = myModule.DefineType("HelloWorld", TypeAttributes.Public);

      return(helloWorldClass.CreateType());
  }
}

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


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

Class MyApplication
   
   Public Shared Sub Main()
      Dim customAttribute As Type = CreateCallee(Thread.GetDomain())
      Dim attributes As Object() = customAttribute.Assembly.GetCustomAttributes(True)
      Console.WriteLine("MyAttribute custom attribute contains : ")
      Dim index As Integer
      For index = 0 To attributes.Length - 1
         If TypeOf attributes(index) Is MyAttribute Then
            Console.WriteLine("s : " + CType(attributes(index), MyAttribute).s.ToString())
            Exit For
         End If
      Next index
   End Sub
   
   Private Shared Function CreateCallee(domain As AppDomain) As Type
      Dim myAssemblyName As New AssemblyName()
      myAssemblyName.Name = "EmittedAssembly"
      Dim myAssembly As AssemblyBuilder = domain.DefineDynamicAssembly(myAssemblyName, _
                                                            AssemblyBuilderAccess.Run)
      Dim myType As Type = GetType(MyAttribute)
      Dim infoConstructor As ConstructorInfo = myType.GetConstructor(New Type() {GetType(Boolean)})
      myAssembly.SetCustomAttribute(infoConstructor, New Byte() {01, 00, 01})
      Dim myModule As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")
      ' Define a public class named "HelloWorld" in the assembly.
      Dim helloWorldClass As TypeBuilder = myModule.DefineType("HelloWorld", TypeAttributes.Public)
      
      Return helloWorldClass.CreateType()
   End Function 'CreateCallee
End Class

Hinweise

Informationen zum Formatieren binaryAttributefinden Sie in der Metadatenspezifikation in Partition II der Spezifikation der Common Language Infrastructure (CLI).

RuntimeConstructorInfo ist ein spezieller Typ, der vom System generiert wird. Es wird von der ConstructorInfo -Klasse abgeleitet, und jedes ConstructorInfo Objekt, das Sie durch Reflektion erhalten, ist tatsächlich ein instance von RuntimeConstructorInfo.