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Asked: 2026-06-18T22:46:27+00:00

I am trying to parse a file using regex split, it works well with

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I am trying to parse a file using regex split, it works well with the '\t' character but some lines have the '\t' inside a field instead of acting as the delimiter.

Like :

G2226   TEST 1  C   29  Internal Head Office    D   Head Office ZZZ Unassigned  10910   10/10/2011  11/10/2011  10/10/2011  11/10/2011  "Test call  Sort the customer out some data. See the customer again tomorrow to talk about Prod     "   Mr ABC          Mr ABC                  Mr  ABC Mr  ABC Credit Requested    BDM Call    Internal Note   10

This part has 2 tabs I wish were ignored :

"Test call  Sort the customer out some data. See the customer again tomorrow to talk about Prod\t\t"

The good thing is, they are included in double quotes, but I cannot work out how to ignore them, any ideas?

Edit:

My goal is to get 36 columns, some columns may come out more after a Regex.Split(lineString,'\t') using '\t' because they include '\t' characters inside some of the fields. I would like to ignore those ones. The one above comes out to 38 cols, which is rejected by my datatable as the header is only 36 cols, I would like to solve this problem.

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1 Answer

  1. Editorial Team

    If you have a simple CSV file, then regex split is usually the easiest way to process it.

    However, if your CSV file contains more complex elements, such as quoted fields that contain separator characters or newlines, then this approach will no longer work. It is not a trivial matter to correctly parse these types of files, so you should use a library when possible.

    The answers to this question give several options for C# libraries that can read a CSV file.

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