EnumBuilder.SetCustomAttribute 方法

定义

设置此构造函数的自定义属性。Sets custom attributes for this constructor.

重载

SetCustomAttribute(CustomAttributeBuilder)

使用自定义属性生成器设置自定义属性。Sets a custom attribute using a custom attribute builder.

SetCustomAttribute(ConstructorInfo, Byte[])

使用指定的自定义属性 blob 设置自定义属性。Sets a custom attribute using a specified custom attribute blob.

SetCustomAttribute(CustomAttributeBuilder)

使用自定义属性生成器设置自定义属性。Sets a custom attribute using a custom attribute builder.

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)

参数

customBuilder
CustomAttributeBuilder

用于定义自定义属性的帮助程序类的一个实例。An instance of a helper class to define the custom attribute.

异常

connullcon is null.

示例

下面的代码示例说明了如何在 EnumBuilder的上下文中使用 SetCustomAttribute,并传递了 CustomAttributeBuilderThe following code sample illustrates the use of SetCustomAttribute in the context of EnumBuilder, passing a CustomAttributeBuilder.

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 MyAttribute : Attribute
{
   public bool myBoolValue;

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

class MyApplication
{
   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 MyAttribute)
            {
               Console.WriteLine("myBoolValue: " + 
                                       ((MyAttribute)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(MyAttribute);
      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

SetCustomAttribute(ConstructorInfo, Byte[])

使用指定的自定义属性 blob 设置自定义属性。Sets a custom attribute using a specified custom attribute blob.

public:
 void SetCustomAttribute(System::Reflection::ConstructorInfo ^ con, cli::array <System::Byte> ^ binaryAttribute);
[System.Runtime.InteropServices.ComVisible(true)]
public void SetCustomAttribute (System.Reflection.ConstructorInfo con, byte[] binaryAttribute);
member this.SetCustomAttribute : System.Reflection.ConstructorInfo * byte[] -> unit
Public Sub SetCustomAttribute (con As ConstructorInfo, binaryAttribute As Byte())

参数

con
ConstructorInfo

自定义属性的构造函数。The constructor for the custom attribute.

binaryAttribute
Byte[]

表示属性的字节 blob。A byte blob representing the attributes.

属性

异常

conbinaryAttributenullcon or binaryAttribute is null.

示例

下面的代码示例演示如何在 EnumBuilder的上下文中使用 SetCustomAttribute,并传递一个字节 blob。The following code sample illustrates the use of SetCustomAttribute in the context of EnumBuilder, passing a byte blob.

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 MyAttribute : Attribute
{
   public bool myBoolValue;

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

class MyApplication
{
   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 MyAttribute)
            {
               Console.WriteLine("myBoolValue: " + 
                                       ((MyAttribute)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(MyAttribute);
      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

注解

有关如何 binaryAttribute格式的详细信息,请参阅 ECMA Partition II 文档中的元数据规范。See the metadata specification in the ECMA Partition II documentation for details on how to format binaryAttribute. 可联机获取该文档;请参阅 MSDN 上的 ECMA C# 和公共语言基础结构标准和 Ecma International 网站上的标准 ECMA-335 - 公共语言基础结构 (CLI)The documentation is available online; see ECMA C# and Common Language Infrastructure Standards on MSDN and Standard ECMA-335 - Common Language Infrastructure (CLI) on the Ecma International Web site.

适用于