AssemblyBuilder.SetCustomAttribute 方法

参考

定义

命名空间:: System.Reflection.Emit

程序集:: System.Reflection.Emit.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

包:: System.Reflection.Emit v4.7.0

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

在此程序集上设置自定义属性。

重载

SetCustomAttribute(CustomAttributeBuilder)	使用自定义属性生成器设置此程序集的自定义属性。
SetCustomAttribute(ConstructorInfo, Byte[])	使用指定的自定义属性 blob 在此程序集上设置自定义属性。

SetCustomAttribute(CustomAttributeBuilder)

Source:: AssemblyBuilder.cs

Source:: AssemblyBuilder.cs

Source:: AssemblyBuilder.cs

使用自定义属性生成器设置此程序集的自定义属性。

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。

例外

ArgumentNullException

con 为 null。

SecurityException

调用方没有所要求的权限。

示例

下面的代码示例演示如何在 CustomAttributeBuilder中使用 SetCustomAttributeAssemblyBuilder。

[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

注解

注意

SetCustomAttribute 不能用于设置声明性安全属性。使用采用必需、可选和拒绝权限的的 DefineDynamicAssembly 重载之一。

注意

从 .NET Framework 2.0 Service Pack 1 开始，此成员不再需要ReflectionPermission带有 ReflectionPermissionFlag.ReflectionEmit 标志。 (请参阅 Reflection Emit.) 中的安全问题若要使用此功能，应用程序应面向 .NET Framework 3.5 或更高版本。

适用于

SetCustomAttribute(ConstructorInfo, Byte[])

Source:: AssemblyBuilder.cs

Source:: AssemblyBuilder.cs

Source:: AssemblyBuilder.cs

使用指定的自定义属性 blob 在此程序集上设置自定义属性。

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())

参数

con: ConstructorInfo

自定义属性的构造函数。

binaryAttribute: Byte[]

表示属性的字节 blob。

属性: ComVisibleAttribute

例外

ArgumentNullException

con 或 binaryAttribute 为 null。

SecurityException

调用方没有所要求的权限。

ArgumentException

con 不是 RuntimeConstructorInfo 对象。

示例

下面的代码示例演示如何使用 SetCustomAttribute 将自定义属性附加到动态生成的程序集。

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

注解

有关如何设置格式 binaryAttribute的信息，请参阅公共语言基础结构的分区 II (CLI) 规范中的元数据规范。

RuntimeConstructorInfo 是系统生成的特殊类型。它派生自 ConstructorInfo 类，通过反射获取的任何 ConstructorInfo 对象实际上是的 RuntimeConstructorInfo实例。

注意

SetCustomAttribute 不能用于设置声明性安全属性。使用采用必需、可选和拒绝权限的的 DefineDynamicAssembly 重载之一。

注意

适用于

通过

AssemblyBuilder.SetCustomAttribute 方法

定义

重载

SetCustomAttribute(CustomAttributeBuilder)

参数

例外

示例

注解

适用于

SetCustomAttribute(ConstructorInfo, Byte[])

参数

例外

示例

注解

适用于

其他资源