Writing dataframe to txt doesn't work properly about corefxlab

[pgovind]

@dcostea : Yes!! We'd love to see a PR. Tag me or @eerhardt and we'll be happy to help review it!

Note: I think this should eventually end up in the new MDAIO project (#2938). But if you add it into MDA itself for now, that's ok too. We can move it later :)

[pgovind]

Hmmm, how did you create your DataFrame? If you read in data from a csv file, can you share it here and I can repro and debug locally?

[liugaocn]

@pgovind
This is the link to the file.
It is compressed, or it would be too big to upload.

update: please download from this link: http://download.cbioportal.org/cellline_ccle_broad.tar.gz

[liugaocn]

@pgovind Is there any solutions to this problem?
Maybe the dataframe is garbage collected. I guess.

[pgovind]

I haven't had a chance to look at it. I'm busy helping out with a .net preview release. I can get back to this in a couple of weeks though and will try to repro/diagnose this then.

[dcostea]

@pgovind in my work with dataframe I need to write the changes to an external CSV file.
I think a method like public static void WriteCsv(DataFrame dataFrame, string filename, char separator = ',', bool header = true, bool addIndexColumn = false, Encoding encoding = null) would be helpful.
I have already the method body using StreamWriter.

May I open a PR?

[liugaocn]

@pgovind in my work with dataframe I need to write the changes to an external CSV file.
I think a method like public static void WriteCsv(DataFrame dataFrame, string filename, char separator = ',', bool header = true, bool addIndexColumn = false, Encoding encoding = null) would be helpful.
I have already the method body using StreamWriter.

May I open a PR?

I don't recommend you to use ',' as a csv seperator. Microsoft.Data.Analysis doesn't work very well with it.