Convert each email attachment to different format
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GroupDocs.Conversion provides a flexible API to control the conversion of documents that contains other documents.
The following code snippet shows how to convert each attachment to a different format based on the attachment type:
var index = 1;
LoadOptions LoadOptionsProvider(FileType sourceType)
{
if (sourceType == EmailFileType.Eml)
{
return new EmailLoadOptions
{
ConvertOwned = true,
ConvertOwner = true,
Depth = 2
};
}
return null;
}
Stream ConvertedStreamProvider(FileType targetType)
{
string outputFile = $"converted-{index++}.{targetType.Extension}";
return new FileStream(outputFile, FileMode.Create);
}
ConvertOptions ConvertOptionsProvider(string sourceDocumentName, FileType sourceType)
{
if (sourceType == EmailFileType.Eml)
{
return new WordProcessingConvertOptions();
}
if (sourceType == WordProcessingFileType.Txt)
{
return new PdfConvertOptions();
}
return new ImageConvertOptions();
}
using (var converter = new Converter("sample_with_attachments.eml", LoadOptionsProvider))
{
converter.Convert(ConvertedStreamProvider, ConvertOptionsProvider);
}
WarningThis functionality is introduced in v20.6
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