Mail attachment charset problem

Question

Hello,
I have made a program which is able to send Icalendar files as an attachment. I get the data as an InputStream.
My problem is that the Icalendar file doesn�t show the letters '�', '�' and '�'. I have tried to use iso-8859-1 in the MimeBodyPart headerline and in the ByteArrayDataSource, but it doesn�t work?!
Where can I specify which charset I want to use?
MimeBodyPart mbp3 = new MimeBodyPart();
mbp3.setFileName( m.getAttachmentFileName() );
mbp3.setHeader("Content-Class", "urn:content-classes:calendarmessage");
mbp3.setHeader("Content-ID","calendar_message");
mbp3.addHeaderLine("charset=iso-8859-1");
java.io.InputStream inputStream = null;
try {
      inputStream = m.getAttachmentFile().getBinaryStream();
      mbp3.setDataHandler( new DataHandler( new javax.mail.util.ByteArrayDataSource( inputStream, "text/calendar;charset=iso-8859-1;method=REQUEST" ) ) );
catch ( Exception e ){}
mpRoot.addBodyPart(mbp3);

Answer 1

Yes you are right... Thank you.
I removed the line:
mbp3.addHeaderLine("charset=iso-8859-1"); - and now the letters are shown correct when opening the ICalendar file using a text editor.
But when openning the file using Outlook the letters '�', '�', '�' are removed?! I know that isn�t a problem in my mail code but certainly in the iCal file?!