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Module::IsDefined Method

Returns a value that indicates whether the specified attribute type has been applied to this module.

Namespace:  System.Reflection
Assembly:  mscorlib (in mscorlib.dll)

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

Parameters

attributeType
Type: System::Type
The type of custom attribute to test for.
inherit
Type: System::Boolean
This argument is ignored for objects of this type.

Return Value

Type: System::Boolean
true if one or more instances of attributeType have been applied to this module; otherwise, false.

Implements

ICustomAttributeProvider::IsDefined(Type, Boolean)

ExceptionCondition
ArgumentNullException

attributeType is nullptr.

ArgumentException

attributeType is not a Type object supplied by the runtime. For example, attributeType is a TypeBuilder object.

The following example demonstrates a use of the IsDefined method.


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 = Assembly::GetExecutingAssembly()->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 ) );
}



.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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