INameCreationService Interface

#using <System.dll>

using namespace System;
using namespace System::ComponentModel::Design;
using namespace System::ComponentModel::Design::Serialization;
using namespace System::Globalization;

namespace NameCreationServiceExample
{
   public ref class NameCreationService: public System::ComponentModel::Design::Serialization::INameCreationService
   {
   public:
      NameCreationService(){}

      // Creates an identifier for a particular data type that does not conflict 
      // with the identifiers of any components in the specified collection.
      virtual String^ CreateName( System::ComponentModel::IContainer^ container, System::Type^ dataType )
      {
         // Create a basic type name string.
         String^ baseName = dataType->Name;
         int uniqueID = 1;
         bool unique = false;

         // Continue to increment uniqueID numeral until a 
         // unique ID is located.
         while (  !unique )
         {
            unique = true;

            // Check each component in the container for a matching 
            // base type name and unique ID.
            for ( int i = 0; i < container->Components->Count; i++ )
            {
               // Check component name for match with unique ID string.
               if ( container->Components[ i ]->Site->Name->StartsWith( String::Concat( baseName, uniqueID ) ) )
               {
                  // If a match is encountered, set flag to recycle 
                  // collection, increment ID numeral, and restart.
                  unique = false;
                  uniqueID++;
                  break;
               }
            }
         }

         return String::Concat( baseName, uniqueID );
      }

      // Returns whether the specified name contains 
      // all valid character types.
      virtual bool IsValidName( String^ name )
      {
         for ( int i = 0; i < name->Length; i++ )
         {
            Char ch = name[ i ];
            UnicodeCategory uc = Char::GetUnicodeCategory( ch );
            switch ( uc )
            {
               case UnicodeCategory::UppercaseLetter:
               case UnicodeCategory::LowercaseLetter:
               case UnicodeCategory::TitlecaseLetter:
               case UnicodeCategory::DecimalDigitNumber:
                  break;

               default:
                  return false;
            }
         }
         return true;
      }

      // Throws an exception if the specified name does not contain 
      // all valid character types.
      virtual void ValidateName( String^ name )
      {
         for ( int i = 0; i < name->Length; i++ )
         {
            Char ch = name[ i ];
            UnicodeCategory uc = Char::GetUnicodeCategory( ch );
            switch ( uc )
            {
               case UnicodeCategory::UppercaseLetter:
               case UnicodeCategory::LowercaseLetter:
               case UnicodeCategory::TitlecaseLetter:
               case UnicodeCategory::DecimalDigitNumber:
                  break;

               default:
                  throw gcnew Exception( String::Format( "The name '{0}' is not a valid identifier.", name ) );
            }
         }
      }
   };
}