CustomAttributeBuilder 클래스

아티클
08/21/2007

사용자 지정 특성을 지정할 수 있도록 합니다.

네임스페이스: System.Reflection.Emit
어셈블리: mscorlib(mscorlib.dll)

구문

‘선언
<ComVisibleAttribute(True)> _
<ClassInterfaceAttribute(ClassInterfaceType.None)> _
Public Class CustomAttributeBuilder
    Implements _CustomAttributeBuilder
‘사용 방법
Dim instance As CustomAttributeBuilder

[ComVisibleAttribute(true)] 
[ClassInterfaceAttribute(ClassInterfaceType.None)] 
public class CustomAttributeBuilder : _CustomAttributeBuilder

[ComVisibleAttribute(true)] 
[ClassInterfaceAttribute(ClassInterfaceType::None)] 
public ref class CustomAttributeBuilder : _CustomAttributeBuilder

/** @attribute ComVisibleAttribute(true) */ 
/** @attribute ClassInterfaceAttribute(ClassInterfaceType.None) */ 
public class CustomAttributeBuilder implements _CustomAttributeBuilder

ComVisibleAttribute(true) 
ClassInterfaceAttribute(ClassInterfaceType.None) 
public class CustomAttributeBuilder implements _CustomAttributeBuilder

설명

참고

이 클래스에 적용되는 HostProtectionAttribute 특성의 Resources 속성 값은 MayLeakOnAbort입니다. HostProtectionAttribute는 대개 아이콘을 두 번 클릭하거나, 명령을 입력하거나, 브라우저에서 URL을 입력하여 시작되는 데스크톱 응용 프로그램에 영향을 미치지 않습니다. 자세한 내용은 HostProtectionAttribute 클래스나 SQL Server 프로그래밍 및 호스트 보호 특성을 참조하십시오.

사용자 지정 특성을 설명하려면 해당 생성자에서 반환된 CustomAttributeBuilder 개체를 사용합니다. 작성기 인스턴스에 있는 SetCustomAttribute 메서드를 호출하여 CustomAttribute를 해당 작성기 인스턴스에 연결합니다. 예를 들어 AssemblyCultureAttribute 생성자와 해당 인수를 제공하여 AssemblyCultureAttribute의 인스턴스를 설명하는 CustomAttributeBuilder를 만듭니다. 그런 다음 AssemblyBuilder에 SetCustomAttribute를 호출하여 연결합니다.

예제

다음 코드 예제에서는 CustomAttributeBuilder를 사용합니다.

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

 _


' We will apply this custom attribute to our dynamic type.
Public Class ClassCreator

   Inherits Attribute
   
   Private creator As String
   
   Public ReadOnly Property GetCreator() As String
      Get
         Return creator
      End Get
   End Property
   
   
   Public Sub New(name As String)
      Me.creator = name
   End Sub 'New

End Class 'ClassCreator
 _ 

' We will apply this dynamic attribute to our dynamic method.
Public Class DateLastUpdated

   Inherits Attribute
   
   Private dateUpdated As String
   
   Public ReadOnly Property GetDateUpdated() As String
      Get
         Return dateUpdated
      End Get
   End Property
   
   
   Public Sub New(theDate As String)
      Me.dateUpdated = theDate
   End Sub 'New

End Class 'DateLastUpdated
 _ 

Class MethodBuilderCustomAttributesDemo
   
   Public Shared Function BuildTypeWithCustomAttributesOnMethod() As Type
      
      Dim currentDomain As AppDomain = Thread.GetDomain()
      
      Dim myAsmName As New AssemblyName()
      myAsmName.Name = "MyAssembly"
      
      Dim myAsmBuilder As AssemblyBuilder = currentDomain.DefineDynamicAssembly(myAsmName, _
                            AssemblyBuilderAccess.Run)
      
      Dim myModBuilder As ModuleBuilder = myAsmBuilder.DefineDynamicModule("MyModule")
      
      ' First, we'll build a type with a custom attribute attached.
      Dim myTypeBuilder As TypeBuilder = myModBuilder.DefineType("MyType", _
                            TypeAttributes.Public)
      
      Dim ctorParams() As Type = {GetType(String)}
      Dim classCtorInfo As ConstructorInfo = GetType(ClassCreator).GetConstructor(ctorParams)
      
      Dim myCABuilder As New CustomAttributeBuilder(classCtorInfo, _
                        New Object() {"Joe Programmer"})
      
      myTypeBuilder.SetCustomAttribute(myCABuilder)
      
      ' Now, let's build a method and add a custom attribute to it.
      Dim myMethodBuilder As MethodBuilder = myTypeBuilder.DefineMethod("HelloWorld", _
                    MethodAttributes.Public, Nothing, New Type() {})
      
      ctorParams = New Type() {GetType(String)}
      classCtorInfo = GetType(DateLastUpdated).GetConstructor(ctorParams)
      
      Dim myCABuilder2 As New CustomAttributeBuilder(classCtorInfo, _
                        New Object() {DateTime.Now.ToString()})
      
      myMethodBuilder.SetCustomAttribute(myCABuilder2)
      
      Dim myIL As ILGenerator = myMethodBuilder.GetILGenerator()
      
      myIL.EmitWriteLine("Hello, world!")
      myIL.Emit(OpCodes.Ret)
      
      Return myTypeBuilder.CreateType()

   End Function 'BuildTypeWithCustomAttributesOnMethod
    
   
   Public Shared Sub Main()
      
      Dim myType As Type = BuildTypeWithCustomAttributesOnMethod()
      
      Dim myInstance As Object = Activator.CreateInstance(myType)
      
      Dim customAttrs As Object() = myType.GetCustomAttributes(True)
      
      Console.WriteLine("Custom Attributes for Type 'MyType':")
      
      Dim attrVal As Object = Nothing
      
      Dim customAttr As Object
      For Each customAttr In  customAttrs
         attrVal = GetType(ClassCreator).InvokeMember("GetCreator", _
                        BindingFlags.GetProperty, _
                        Nothing, customAttr, New Object() {})
         Console.WriteLine("-- Attribute: [{0} = ""{1}""]", customAttr, attrVal)
      Next customAttr
      
      Console.WriteLine("Custom Attributes for Method 'HelloWorld()' in 'MyType':")
      
      customAttrs = myType.GetMember("HelloWorld")(0).GetCustomAttributes(True)
      
      For Each customAttr In  customAttrs
         attrVal = GetType(DateLastUpdated).InvokeMember("GetDateUpdated", _
                        BindingFlags.GetProperty, _
                        Nothing, customAttr, New Object() {})
         Console.WriteLine("-- Attribute: [{0} = ""{1}""]", customAttr, attrVal)
      Next customAttr
      
      Console.WriteLine("---")
      
      Console.WriteLine(myType.InvokeMember("HelloWorld", BindingFlags.InvokeMethod, _
                        Nothing, myInstance, New Object() {}))
   End Sub 'Main

End Class 'MethodBuilderCustomAttributesDemo

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


// We will apply this custom attribute to our dynamic type.
public class ClassCreator: Attribute

{
   private string creator;
   public string Creator 
   {
    get
    {
       return creator;
    }
   }    

   public ClassCreator(string name)
   {
      this.creator = name;
   }

}

// We will apply this dynamic attribute to our dynamic method.
public class DateLastUpdated: Attribute

{
   private string dateUpdated;
   public string DateUpdated
   {
    get
    {
       return dateUpdated;
    }
   }

   public DateLastUpdated(string theDate)
   {
    this.dateUpdated = theDate;
   } 

}

class MethodBuilderCustomAttributesDemo

{

   public static Type BuildTypeWithCustomAttributesOnMethod()
   {
    
    AppDomain currentDomain = Thread.GetDomain();
    
    AssemblyName myAsmName = new AssemblyName();
    myAsmName.Name = "MyAssembly";

    AssemblyBuilder myAsmBuilder = currentDomain.DefineDynamicAssembly(
                       myAsmName, AssemblyBuilderAccess.Run);

    ModuleBuilder myModBuilder = myAsmBuilder.DefineDynamicModule("MyModule");

    // First, we'll build a type with a custom attribute attached.

    TypeBuilder myTypeBuilder = myModBuilder.DefineType("MyType",
                        TypeAttributes.Public);
    
    Type[] ctorParams = new Type[] { typeof(string) };
    ConstructorInfo classCtorInfo = typeof(ClassCreator).GetConstructor(ctorParams);

    CustomAttributeBuilder myCABuilder = new CustomAttributeBuilder(
                        classCtorInfo,
                        new object[] { "Joe Programmer" });

    myTypeBuilder.SetCustomAttribute(myCABuilder);

    // Now, let's build a method and add a custom attribute to it.

    MethodBuilder myMethodBuilder = myTypeBuilder.DefineMethod("HelloWorld",
                    MethodAttributes.Public,
                    null,
                    new Type[] { });

    ctorParams = new Type[] { typeof(string) };
    classCtorInfo = typeof(DateLastUpdated).GetConstructor(ctorParams);

    CustomAttributeBuilder myCABuilder2 = new CustomAttributeBuilder(
                        classCtorInfo,
                        new object[] { DateTime.Now.ToString() });

    myMethodBuilder.SetCustomAttribute(myCABuilder2);

    ILGenerator myIL = myMethodBuilder.GetILGenerator();

    myIL.EmitWriteLine("Hello, world!");
    myIL.Emit(OpCodes.Ret);

    return myTypeBuilder.CreateType();
    
   }

   public static void Main() 
   {

    Type myType = BuildTypeWithCustomAttributesOnMethod();

    object myInstance = Activator.CreateInstance(myType);

    object[] customAttrs = myType.GetCustomAttributes(true);

    Console.WriteLine("Custom Attributes for Type 'MyType':");

    object attrVal = null;

    foreach (object customAttr in customAttrs) 
    {
       attrVal = typeof(ClassCreator).InvokeMember("Creator", 
                      BindingFlags.GetProperty,
                      null, customAttr, new object[] { });
       Console.WriteLine("-- Attribute: [{0} = \"{1}\"]", customAttr, attrVal);
        }

    Console.WriteLine("Custom Attributes for Method 'HelloWorld()' in 'MyType':");

    customAttrs = myType.GetMember("HelloWorld")[0].GetCustomAttributes(true);  

    foreach (object customAttr in customAttrs) 
    {
       attrVal = typeof(DateLastUpdated).InvokeMember("DateUpdated", 
                      BindingFlags.GetProperty,
                      null, customAttr, new object[] { });
       Console.WriteLine("-- Attribute: [{0} = \"{1}\"]", customAttr, attrVal);
        }

    Console.WriteLine("---");

    Console.WriteLine(myType.InvokeMember("HelloWorld",
              BindingFlags.InvokeMethod,
              null, myInstance, new object[] { }));
                           
    
   }

}

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

// We will apply this custom attribute to our dynamic type.
public ref class ClassCreator: public Attribute
{
private:
   String^ creator;

public:

   property String^ Creator 
   {
      String^ get()
      {
         return creator;
      }

   }
   ClassCreator( String^ name )
   {
      this->creator = name;
   }

};


// We will apply this dynamic attribute to our dynamic method.
public ref class DateLastUpdated: public Attribute
{
private:
   String^ dateUpdated;

public:

   property String^ DateUpdated 
   {
      String^ get()
      {
         return dateUpdated;
      }

   }
   DateLastUpdated( String^ theDate )
   {
      this->dateUpdated = theDate;
   }

};

Type^ BuildTypeWithCustomAttributesOnMethod()
{
   AppDomain^ currentDomain = Thread::GetDomain();
   AssemblyName^ myAsmName = gcnew AssemblyName;
   myAsmName->Name = "MyAssembly";
   AssemblyBuilder^ myAsmBuilder = currentDomain->DefineDynamicAssembly( myAsmName, AssemblyBuilderAccess::Run );
   ModuleBuilder^ myModBuilder = myAsmBuilder->DefineDynamicModule( "MyModule" );
   
   // First, we'll build a type with a custom attribute attached.
   TypeBuilder^ myTypeBuilder = myModBuilder->DefineType( "MyType", TypeAttributes::Public );
   array<Type^>^temp6 = {String::typeid};
   array<Type^>^ctorParams = temp6;
   ConstructorInfo^ classCtorInfo = ClassCreator::typeid->GetConstructor( ctorParams );
   array<Object^>^temp0 = {"Joe Programmer"};
   CustomAttributeBuilder^ myCABuilder = gcnew CustomAttributeBuilder( classCtorInfo,temp0 );
   myTypeBuilder->SetCustomAttribute( myCABuilder );
   
   // Now, let's build a method and add a custom attribute to it.
   array<Type^>^temp1 = gcnew array<Type^>(0);
   MethodBuilder^ myMethodBuilder = myTypeBuilder->DefineMethod( "HelloWorld", MethodAttributes::Public, nullptr, temp1 );
   array<Type^>^temp7 = {String::typeid};
   ctorParams = temp7;
   classCtorInfo = DateLastUpdated::typeid->GetConstructor( ctorParams );
   array<Object^>^temp2 = {DateTime::Now.ToString()};
   CustomAttributeBuilder^ myCABuilder2 = gcnew CustomAttributeBuilder( classCtorInfo,temp2 );
   myMethodBuilder->SetCustomAttribute( myCABuilder2 );
   ILGenerator^ myIL = myMethodBuilder->GetILGenerator();
   myIL->EmitWriteLine( "Hello, world!" );
   myIL->Emit( OpCodes::Ret );
   return myTypeBuilder->CreateType();
}

int main()
{
   Type^ myType = BuildTypeWithCustomAttributesOnMethod();
   Object^ myInstance = Activator::CreateInstance( myType );
   array<Object^>^customAttrs = myType->GetCustomAttributes( true );
   Console::WriteLine( "Custom Attributes for Type 'MyType':" );
   Object^ attrVal = nullptr;
   System::Collections::IEnumerator^ myEnum = customAttrs->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ customAttr = safe_cast<Object^>(myEnum->Current);
      array<Object^>^temp3 = gcnew array<Object^>(0);
      attrVal = ClassCreator::typeid->InvokeMember( "Creator", BindingFlags::GetProperty, nullptr, customAttr, temp3 );
      Console::WriteLine( "-- Attribute: [{0} = \"{1}\"]", customAttr, attrVal );
   }

   Console::WriteLine( "Custom Attributes for Method 'HelloWorld()' in 'MyType':" );
   customAttrs = myType->GetMember( "HelloWorld" )[ 0 ]->GetCustomAttributes( true );
   System::Collections::IEnumerator^ myEnum2 = customAttrs->GetEnumerator();
   while ( myEnum2->MoveNext() )
   {
      Object^ customAttr = safe_cast<Object^>(myEnum2->Current);
      array<Object^>^temp4 = gcnew array<Object^>(0);
      attrVal = DateLastUpdated::typeid->InvokeMember( "DateUpdated", BindingFlags::GetProperty, nullptr, customAttr, temp4 );
      Console::WriteLine( "-- Attribute: [{0} = \"{1}\"]", customAttr, attrVal );
   }

   Console::WriteLine( "---" );
   array<Object^>^temp5 = gcnew array<Object^>(0);
   Console::WriteLine( myType->InvokeMember( "HelloWorld", BindingFlags::InvokeMethod, nullptr, myInstance, temp5 ) );
}

import System.*;
import System.Threading.*;
import System.Reflection.*;
import System.Reflection.Emit.*;

// We will apply this custom attribute to our dynamic type.
public class ClassCreator extends Attribute
{
    private String creator;

    /** @property 
     */
    public String get_Creator()
    {
        return creator ;
    } //get_Creator

    public ClassCreator(String name) 
    {
        this.creator = name;
    } //ClassCreator
} //ClassCreator

// We will apply this dynamic attribute to our dynamic method.
public class DateLastUpdated extends Attribute
{
    private String dateUpdated;
    /** @property 
     */
    public String get_DateUpdated()
    {
        return dateUpdated ;
    } //get_DateUpdated

    public DateLastUpdated(String theDate) 
    {
        this.dateUpdated = theDate;
    } //DateLastUpdated
} //DateLastUpdated

class MethodBuilderCustomAttributesDemo
{
    public static Type BuildTypeWithCustomAttributesOnMethod() 
    {
        AppDomain currentDomain = System.Threading.Thread.GetDomain();
        AssemblyName myAsmName = new AssemblyName();
        myAsmName.set_Name("MyAssembly");
        AssemblyBuilder myAsmBuilder = currentDomain.DefineDynamicAssembly(
            myAsmName, AssemblyBuilderAccess.Run);
        ModuleBuilder myModBuilder =
            myAsmBuilder.DefineDynamicModule("MyModule");
        // First, we'll build a type with a custom attribute attached.
        TypeBuilder myTypeBuilder = myModBuilder.DefineType(
            "MyType", TypeAttributes.Public);
        Type ctorParams[] = new Type[]{String.class.ToType()};
        ConstructorInfo classCtorInfo = 
            ClassCreator.class.ToType().GetConstructor(ctorParams);
        CustomAttributeBuilder myCABuilder =  
            new CustomAttributeBuilder(classCtorInfo,
            new Object[]{"Joe Programmer"});
        myTypeBuilder.SetCustomAttribute(myCABuilder);

        // Now, let's build a method and add a custom attribute to it.
        MethodBuilder myMethodBuilder = myTypeBuilder.DefineMethod(
            "HelloWorld", MethodAttributes.Public, null, new Type[]{});
        ctorParams = new Type[]{String.class.ToType()};
        classCtorInfo =
            DateLastUpdated.class.ToType().GetConstructor(ctorParams);
        CustomAttributeBuilder myCABuilder2 = new CustomAttributeBuilder(
            classCtorInfo, new Object[]{DateTime.get_Now().ToString()});
        myMethodBuilder.SetCustomAttribute(myCABuilder2);
        ILGenerator myIL = myMethodBuilder.GetILGenerator();
        myIL.EmitWriteLine("Hello, world!");
        myIL.Emit(OpCodes.Ret);      
        return myTypeBuilder.CreateType() ;
    } //BuildTypeWithCustomAttributesOnMethod

    public static void main(String[] args)
    {
        Type myType = BuildTypeWithCustomAttributesOnMethod();      
        Object myInstance = Activator.CreateInstance(myType);      
        Object customAttrs[] = myType.GetCustomAttributes(true);      
        Console.WriteLine("Custom Attributes for Type 'MyType':");      
        Object attrVal = null;
        for (int iCtr=0; iCtr < customAttrs.length; iCtr++) {
            Object customAttr = customAttrs[iCtr];
            attrVal = ClassCreator.class.ToType().InvokeMember
                ("Creator", BindingFlags.GetProperty, null, customAttr,
                new Object[] {});
            Console.WriteLine(
                "-- Attribute: [{0} = \"{1}\"]", customAttr,attrVal);
        }      
        Console.WriteLine(
            "Custom Attributes for Method 'HelloWorld()' in 'MyType':");      
        customAttrs =
            myType.GetMember("HelloWorld")[0].GetCustomAttributes(true);
        for(int iCtr = 0; iCtr < customAttrs.length; iCtr++) {
            Object customAttr = customAttrs[iCtr];
            attrVal = DateLastUpdated.class.ToType().InvokeMember(
                "DateUpdated", BindingFlags.GetProperty, null, 
                customAttr, new Object[] {});
            Console.WriteLine(
                "-- Attribute: [{0} = \"{1}\"]",customAttr, attrVal);
        }      
        Console.WriteLine("---");      
        Console.WriteLine(myType.InvokeMember(
            "HelloWorld", BindingFlags.InvokeMethod, null, 
            myInstance, new Object[] {}));
    } //main
} //MethodBuilderCustomAttributesDemo

상속 계층 구조

System.Object
System.Reflection.Emit.CustomAttributeBuilder

스레드로부터의 안전성

이 형식의 모든 public static(Visual Basic의 경우 Shared) 멤버는 스레드로부터 안전합니다. 인터페이스 멤버는 스레드로부터 안전하지 않습니다.

플랫폼

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework에서 모든 플래폼의 모든 버전을 지원하지는 않습니다. 지원되는 버전의 목록은 시스템 요구 사항을 참조하십시오.

다음을 통해 공유

CustomAttributeBuilder 클래스

구문

설명

예제

상속 계층 구조

스레드로부터의 안전성

플랫폼

버전 정보

.NET Framework

참고 항목

참조

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