ConstructorBuilder.SetCustomAttribute メソッド

定義

名前空間:: System.Reflection.Emit

アセンブリ:: mscorlib.dll

アセンブリ:: netstandard.dll

重要

一部の情報は、リリース前に大きく変更される可能性があるプレリリースされた製品に関するものです。 Microsoft は、ここに記載されている情報について、明示または黙示を問わず、一切保証しません。

カスタム属性を設定します。

オーバーロード

名前	説明
SetCustomAttribute(ConstructorInfo, Byte[])	指定したカスタム属性 BLOB を使用してカスタム属性を設定します。
SetCustomAttribute(CustomAttributeBuilder)	カスタム属性ビルダーを使用してカスタム属性を設定します。

SetCustomAttribute(ConstructorInfo, Byte[])

指定したカスタム属性 BLOB を使用してカスタム属性を設定します。

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())

パラメーター

con: ConstructorInfo

カスタム属性のコンストラクター。

binaryAttribute: Byte[]

属性を表すバイト BLOB。

属性: ComVisibleAttribute

例外

ArgumentNullException

con または binaryAttribute が null。

例

次のコードサンプルは、バイト BLOB を渡すConstructorBuilderのコンテキストのSetCustomAttributeの使用を示しています。

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

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

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

public class MyConstructorBuilder
{
   public static void Main()
   {
      Type myHelloworld = MyCreateCallee(Thread.GetDomain());
      ConstructorInfo myConstructor = myHelloworld.GetConstructor(new Type[]{typeof(String)});
      object[] myAttributes1 = myConstructor.GetCustomAttributes(true);
      Console.WriteLine("MyAttribute custom attribute contains  ");
      for(int index=0; index < myAttributes1.Length; index++)
      {
         if(myAttributes1[index] is MyAttribute)
         {
            Console.WriteLine("myBoolean : " + ((MyAttribute)myAttributes1[index]).myBoolean);
         }
      }
   }

   private static Type MyCreateCallee(AppDomain domain)
   {
      AssemblyName myAssemblyName = new AssemblyName();
      myAssemblyName.Name = "EmittedAssembly";
      // Define a dynamic assembly in the current application domain.
      AssemblyBuilder myAssembly =
                  domain.DefineDynamicAssembly(myAssemblyName,AssemblyBuilderAccess.Run);
      // Define a dynamic module in this assembly.
      ModuleBuilder myModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule");
      // Construct a 'TypeBuilder' given the name and attributes.
      TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("HelloWorld",
         TypeAttributes.Public);
      // Define a constructor of the dynamic class.
      ConstructorBuilder myConstructor = myTypeBuilder.DefineConstructor(
               MethodAttributes.Public, CallingConventions.Standard, new Type[]{typeof(String)});
      ILGenerator myILGenerator = myConstructor.GetILGenerator();
      myILGenerator.Emit(OpCodes.Ldstr, "Constructor is invoked");
      myILGenerator.Emit(OpCodes.Ldarg_1);
      MethodInfo myMethodInfo =
                     typeof(Console).GetMethod("WriteLine",new Type[]{typeof(string)});
      myILGenerator.Emit(OpCodes.Call, myMethodInfo);
      myILGenerator.Emit(OpCodes.Ret);
      Type myType = typeof(MyAttribute);
      ConstructorInfo myConstructorInfo = myType.GetConstructor(new Type[]{typeof(bool)});
      try
      {
         myConstructor.SetCustomAttribute(myConstructorInfo, new byte[]{01,00,01});
      }
      catch(ArgumentNullException ex)
      {
         Console.WriteLine("The following exception has occurred : "+ex.Message);
      }
      catch(Exception ex)
      {
         Console.WriteLine("The following exception has occurred : "+ex.Message);
      }
      return myTypeBuilder.CreateType();
   }
}

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

<AttributeUsage(AttributeTargets.All, AllowMultiple := False)>  _
Public Class MyAttribute
   Inherits Attribute
   Public myBoolean As Boolean

   Public Sub New(myBoolean As Boolean)
      Me.myBoolean = myBoolean
   End Sub
End Class

Public Class MyConstructorBuilder

   Public Shared Sub Main()
      Dim myHelloworld As Type = MyCreateCallee(Thread.GetDomain())
      Dim myConstructor As ConstructorInfo = myHelloworld.GetConstructor(New Type() _
                                                                        {GetType(String)})
      Dim myAttributes1 As Object() = myConstructor.GetCustomAttributes(True)
      Console.WriteLine("MyAttribute custom attribute contains  ")
      Dim index As Integer
      For index = 0 To myAttributes1.Length - 1
         If TypeOf myAttributes1(index) Is MyAttribute Then
            Console.WriteLine("myBoolean : " + _
                               CType(myAttributes1(index), MyAttribute).myBoolean.ToString())
         End If
      Next index
   End Sub

   Private Shared Function MyCreateCallee(domain As AppDomain) As Type
      Dim myAssemblyName As New AssemblyName()
      myAssemblyName.Name = "EmittedAssembly"
      ' Define a dynamic assembly in the current application domain.
      Dim myAssembly As AssemblyBuilder = domain.DefineDynamicAssembly _
                                       (myAssemblyName, AssemblyBuilderAccess.Run)
      ' Define a dynamic module in this assembly.
      Dim myModuleBuilder As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")
      ' Construct a 'TypeBuilder' given the name and attributes.
      Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType _
                                                       ("HelloWorld", TypeAttributes.Public)
      ' Define a constructor of the dynamic class.
      Dim myConstructor As ConstructorBuilder = myTypeBuilder.DefineConstructor _
                (MethodAttributes.Public, CallingConventions.Standard, New Type() {GetType(String)})
      Dim myILGenerator As ILGenerator = myConstructor.GetILGenerator()
      myILGenerator.Emit(OpCodes.Ldstr, "Constructor is invoked")
      myILGenerator.Emit(OpCodes.Ldarg_1)
      Dim myMethodInfo As MethodInfo = GetType(Console).GetMethod("WriteLine", New Type() _
                                                                          {GetType(String)})
      myILGenerator.Emit(OpCodes.Call, myMethodInfo)
      myILGenerator.Emit(OpCodes.Ret)
      Dim myType As Type = GetType(MyAttribute)
      Dim myConstructorInfo As ConstructorInfo = myType.GetConstructor(New Type() {GetType(Boolean)})
      Try
         myConstructor.SetCustomAttribute(myConstructorInfo, New Byte() {1, 0, 1})
      Catch ex As ArgumentNullException
         Console.WriteLine("The following exception has occurred : " + ex.Message)
      Catch ex As Exception
         Console.WriteLine("The following exception has occurred : " + ex.Message)
      End Try
      Return myTypeBuilder.CreateType()
   End Function 'MyCreateCallee
End Class

注釈

binaryAttributeの書式を設定する方法については、共通言語インフラストラクチャ (CLI) 仕様のパーティション II のメタデータ仕様を参照してください。

適用対象

SetCustomAttribute(CustomAttributeBuilder)

カスタム属性ビルダーを使用してカスタム属性を設定します。

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)

パラメーター

customBuilder: CustomAttributeBuilder

カスタム属性を定義するヘルパークラスのインスタンス。

例外

ArgumentNullException

customBuilder は nullです。

例

次のコードサンプルは、ConstructorBuilderのコンテキストのSetCustomAttributeを使用して、CustomAttributeBuilderを渡す方法を示しています。

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

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

public class MyConstructorBuilder
{
   public static void Main()
   {
      Type myHelloworld = MyCreateCallee(Thread.GetDomain());
      ConstructorInfo myConstructor = myHelloworld.GetConstructor(new Type[]{typeof(String)});
      object[] myAttributes1 = myConstructor.GetCustomAttributes(true);
      Console.WriteLine("MyAttribute custom attribute contains  ");
      for(int index=0; index < myAttributes1.Length; index++)
      {
         if(myAttributes1[index] is MyAttribute)
         {
            Console.WriteLine("The value of myString is : "
                                       + ((MyAttribute)myAttributes1[index]).myString);
            Console.WriteLine("The value of myInteger is : "
                                       + ((MyAttribute)myAttributes1[index]).myInteger);
         }
      }
   }

   private static Type MyCreateCallee(AppDomain domain)
   {
      AssemblyName myAssemblyName = new AssemblyName();
      myAssemblyName.Name = "EmittedAssembly";
      // Define a dynamic assembly in the current application domain.
      AssemblyBuilder myAssembly =
                  domain.DefineDynamicAssembly(myAssemblyName,AssemblyBuilderAccess.Run);
      // Define a dynamic module in this assembly.
      ModuleBuilder myModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule");
       // Construct a 'TypeBuilder' given the name and attributes.
      TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("HelloWorld",
         TypeAttributes.Public);
      // Define a constructor of the dynamic class.
      ConstructorBuilder myConstructor = myTypeBuilder.DefineConstructor(
               MethodAttributes.Public, CallingConventions.Standard, new Type[]{typeof(String)});
      ILGenerator myILGenerator = myConstructor.GetILGenerator();
      myILGenerator.Emit(OpCodes.Ldstr, "Constructor is invoked");
      myILGenerator.Emit(OpCodes.Ldarg_1);
      MethodInfo myMethodInfo =
                     typeof(Console).GetMethod("WriteLine",new Type[]{typeof(string)});
      myILGenerator.Emit(OpCodes.Call, myMethodInfo);
      myILGenerator.Emit(OpCodes.Ret);
      Type myType = typeof(MyAttribute);
      ConstructorInfo myConstructorInfo = myType.GetConstructor(new Type[2]{typeof(String), typeof(int)});
      CustomAttributeBuilder attributeBuilder =
         new CustomAttributeBuilder(myConstructorInfo, new object[2]{"Hello", 2});
      try
      {
         myConstructor.SetCustomAttribute(attributeBuilder);
      }
      catch(ArgumentNullException ex)
      {
         Console.WriteLine("The following exception has occurred : "+ex.Message);
      }
      catch(Exception ex)
      {
         Console.WriteLine("The following exception has occurred : "+ex.Message);
      }
      return myTypeBuilder.CreateType();
   }
}

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


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

Public Class MyConstructorBuilder
   
   Public Shared Sub Main()
      Dim myHelloworld As Type = MyCreateCallee(Thread.GetDomain())
      Dim myConstructor As ConstructorInfo = myHelloworld.GetConstructor(New Type() _ 
                                                                       {GetType(String)})
      Dim myAttributes1 As Object() = myConstructor.GetCustomAttributes(True)
      Console.WriteLine("MyAttribute custom attribute contains  ")
      Dim index As Integer
      For index = 0 To myAttributes1.Length - 1
         If TypeOf myAttributes1(index) Is MyAttribute Then
            Console.WriteLine("The value of myString is : " + CType(myAttributes1(index), _ 
                                                                       MyAttribute).myString)
            Console.WriteLine("The value of myInteger is : " + CType(myAttributes1(index), _ 
                                                            MyAttribute).myInteger.ToString())
         End If
      Next index
   End Sub
   
   Private Shared Function MyCreateCallee(domain As AppDomain) As Type
      Dim myAssemblyName As New AssemblyName()
      myAssemblyName.Name = "EmittedAssembly"
      ' Define a dynamic assembly in the current application domain.
      Dim myAssembly As AssemblyBuilder = domain.DefineDynamicAssembly _ 
                                          (myAssemblyName, AssemblyBuilderAccess.Run)
      ' Define a dynamic module in this assembly.
      Dim myModuleBuilder As ModuleBuilder = myAssembly.DefineDynamicModule("EmittedModule")
      ' Construct a 'TypeBuilder' given the name and attributes.
      Dim myTypeBuilder As TypeBuilder = myModuleBuilder.DefineType _ 
                                                       ("HelloWorld", TypeAttributes.Public)
      ' Define a constructor of the dynamic class.
      Dim myConstructor As ConstructorBuilder = myTypeBuilder.DefineConstructor _ 
             (MethodAttributes.Public, CallingConventions.Standard, New Type() {GetType(String)})
      Dim myILGenerator As ILGenerator = myConstructor.GetILGenerator()
      myILGenerator.Emit(OpCodes.Ldstr, "Constructor is invoked")
      myILGenerator.Emit(OpCodes.Ldarg_1)
      Dim myMethodInfo As MethodInfo = GetType(Console).GetMethod("WriteLine", New Type() _ 
                                                                           {GetType(String)})
      myILGenerator.Emit(OpCodes.Call, myMethodInfo)
      myILGenerator.Emit(OpCodes.Ret)
      Dim myType As Type = GetType(MyAttribute)
      Dim myConstructorInfo As ConstructorInfo = myType.GetConstructor(New Type(1) _ 
                                                           {GetType(String), GetType(Integer)})
      Dim attributeBuilder As New CustomAttributeBuilder _ 
                                  (myConstructorInfo, New Object(1) {"Hello", 2})
      Try
         myConstructor.SetCustomAttribute(attributeBuilder)
      Catch ex As ArgumentNullException
         Console.WriteLine("The following exception has occurred : " + ex.Message)
      Catch ex As Exception
         Console.WriteLine("The following exception has occurred : " + ex.Message)
      End Try
      Return myTypeBuilder.CreateType()
   End Function 'MyCreateCallee
End Class

適用対象

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