Module.IsDefined(Type, Boolean) Метод

public:
 virtual bool IsDefined(Type ^ attributeType, bool inherit);

public virtual bool IsDefined (Type attributeType, bool inherit);

abstract member IsDefined : Type * bool -> bool
override this.IsDefined : Type * bool -> bool

Public Overridable Function IsDefined (attributeType As Type, inherit As Boolean) As Boolean

Значение true, если к этому модулю применен один или несколько экземпляров attributeType, в противном случае — значение false.

В следующем примере показано использование IsDefined метода .

using namespace System;
using namespace System::Reflection;

namespace ReflectionModule_Examples
{

   //A very simple custom attribute.

   [AttributeUsage(AttributeTargets::Class|AttributeTargets::Module)]
   public ref class MySimpleAttribute: public Attribute
   {
   private:
      String^ name;

   public:
      MySimpleAttribute( String^ newName )
      {
         name = newName;
      }

   };

}


//Define a module-level attribute.

[module:ReflectionModule_Examples::MySimpleAttribute("module-level")];
int main()
{
   array<System::Reflection::Module^>^moduleArray;
   moduleArray = ReflectionModule_Examples::MySimpleAttribute::typeid->Assembly->GetModules( false );
   
   //In a simple project with only one module, the module at index
   // 0 will be the module containing these classes.
   System::Reflection::Module^ myModule = moduleArray[ 0 ];
   Type^ myType;
   myType = myModule->GetType( "ReflectionModule_Examples.MySimpleAttribute" );
   Console::WriteLine( "IsDefined(MySimpleAttribute) = {0}", myModule->IsDefined( myType, false ) );
}

using System;
using System.Reflection;

//Define a module-level attribute.
[module: ReflectionModule_Examples.MySimpleAttribute("module-level")]

namespace ReflectionModule_Examples
{
    class MyMainClass
    {
        static void Main()
        {
            Module[] moduleArray;
            
            moduleArray = typeof(MyMainClass).Assembly.GetModules(false);
            
            //In a simple project with only one module, the module at index
            // 0 will be the module containing these classes.
            Module myModule = moduleArray[0];

            Type myType;
            myType = myModule.GetType("ReflectionModule_Examples.MySimpleAttribute");
            Console.WriteLine("IsDefined(MySimpleAttribute) = {0}", myModule.IsDefined(myType, false));
        }
    }

    //A very simple custom attribute.
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Module)]
    public class MySimpleAttribute : Attribute
    {
        private string name;

        public MySimpleAttribute(string newName)
        {
            name = newName;
        }
    }
}

Imports System.Reflection

'Define a module-level attribute.
<Module: ReflectionModule_Examples.MySimpleAttribute("module-level")> 

'Define a module-level attribute.
Namespace ReflectionModule_Examples
    Class MyMainClass
        Shared Sub Main()
            Dim moduleArray() As [Module]

            moduleArray = GetType(MyMainClass).Assembly.GetModules(False)

            'In a simple project with only one module, the module at index
            ' 0 will be the module containing these classes.
            Dim myModule As [Module] = moduleArray(0)

            Dim myType As Type
            myType = myModule.GetType("ReflectionModule_Examples.MySimpleAttribute")
            Console.WriteLine("IsDefined(MySimpleAttribute) = {0}", myModule.IsDefined(myType, False))
        End Sub
    End Class

    'A very simple custom attribute.
    <AttributeUsage(AttributeTargets.Class Or AttributeTargets.Module)> _
    Public Class MySimpleAttribute
        Inherits Attribute
        Private name As String

        Public Sub New(ByVal newName As String)
            name = newName
        End Sub
    End Class
End Namespace 'ReflectionModule_Examples