# Set the Character Set During Subfile Extraction

You can convert the character set of a subfile at the time the subfile is extracted from the container. This is most often used to set the character set of a mail message's body text. See Filter PDF Files for more information.

To specify the source and target character set of a subfile

1. Use the methods of the `ExtractSubFileExtractConfig` object to set the source and target character set.

2. Call the `ExtractSubFile` method of the Filter object and pass in the `ExtractSubFileExtractConfig` object. For example:

       subFileConfig.FilePath = subInfo.SubFileName;
       subFileConfig.ExtractDirectory = m_extractDir;
       subFileConfig.CreateDirectory = m_createDir;
       subFileConfig.OverWrite = true;
       subFileConfig.ExcludeMailHeader = m_excludeMailHeader;
       subFileConfig.GetFormattedBody = m_getFormattedBody;
       subFileConfig.SourceCharset = m_sourceCharSet;
       subFileConfig.TargetCharset = m_outputCharSet;
       subFileConfig.LittleEndian = m_isLittleEnd == 1 ? true : false;

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