Saving File conversion to variable instead of physical location

Question

I'm trying out to use the XML - Mind converter https://www.xmlmind.com/foconverter/ to convert some xsl-fo to an rtf and this works well . Just to be clear this is nothing specific to the conveter or its functionality but just a clarification I would like to get which is why I am asking this on stack overflow .

So I have the following code (that was obtained from some documentation)

string foFilePath = @"D:\Temp\test.fo";
string ourPutFilePath = @"D:\Temp\test.rtf";


                Converter converter = new Converter();
                converter.OutputFormat = OutputFormat.Rtf;
                converter.OutputEncoding = "windows-1252";
                converter.ImageResolution = 120;


                converter.SetInput(foFilePath);
                converter.SetOutput(ourPutFilePath);
                
                converter.Convert();

What happens here is quite simple Reads a file from the input path and stores the converted file in the specified output . The question I would like to clarify here is , wheather it would be possible to store this content that is being saved in the file out put path within a variable as well to may be do some processing during the application runtime ?

Maybe I can use the MemoryStream for it ? I'm just not sure how to do it and would really appreciate some help here.

I understand that I can always read it back from the file output path but I am looking for something better than that as saving the file to a certain location may not always be possible in my case

EDIT :- The converter.SetOutput() method allows 3 overloads in the parameters

1. String fileName
2. Stream stream
3. TextWriter writer

Answer 1

Sine you need the output as a string you could try doing something like this

      string content;
      using (var stream = new MemoryStream())
      {
        using (var writer = new StreamWriter(stream))
        {
          Converter converter = new Converter();
          converter.OutputFormat = OutputFormat.Rtf;
          converter.OutputEncoding = "windows-1252";
          converter.ImageResolution = 120;
          converter.SetInput(foFilePath);
          converter.SetOutput(writer);
          converter.Convert();
          stream.Position = 0;
          content = Encoding.UTF8.GetString(stream.ToArray());
        }
      } 

I'm not sure about the Encoding though, and if the Convert() uses a different encoding this might not work