Parse an EDIFACT message to find a certain segment

Hello, I am trying to parse out the all the LOC segments and populate an array with the 2nd and 3rd element of each segment.

Note: the ‘+’ is an element delimiter

I understand to parse a string into an array I can use something like this:

string[] Arr = str.Split(new char[] { '[', ']' }, StringSplitOptions.RemoveEmptyEntries);

But when trying to parse a message, how do I only find a certain segment?

UNA:+.? '

UNB+UNOC:3+2021000969+4441963198+180525:1225+3VAL2MJV6EH9IX+KMSV7HMD+CUSDECU-IE++1++1'

UNH+EDIFACT+CUSDEC:D:96B:UN:145050'

BGM+ZEM:::EX+09SEE7JPUV5HC06IC6+Z'

LOC+17+IT044100'

LOC+18+SOL'

LOC+35+SE'

LOC+36+TZ'

LOC+116+SE003033'

DTM+9:20090527:102'

DTM+268:20090626:102'

DTM+182:20090527:102'

You can try this:

void Main()

{

string edifact = @"UNA:+.? '

UNB+UNOC:3+2021000969+4441963198+180525:1225+3VAL2MJV6EH9IX+KMSV7HMD+CUSDECU-IE++1++1'

UNH+EDIFACT+CUSDEC:D:96B:UN:145050'

BGM+ZEM:::EX+09SEE7JPUV5HC06IC6+Z'

LOC+17+IT044100'

LOC+18+SOL'

LOC+35+SE'

LOC+36+TZ'

LOC+116+SE003033'

DTM+9:20090527:102'

DTM+268:20090626:102'

DTM+182:20090527:102'";

List> results = new List>();

// split on newline, then select lines starting with LOC+

string[] lines = edifact.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries).Where(line => line.StartsWith("LOC+")).ToArray();

foreach (string line in lines)

{

// remove trailing '

string trimmedLine = line.Substring(0, line.IndexOf('\''));

// split on the +

string[] items = trimmedLine.Split('+').ToArray();

// add items 1 and 2 to the results list

results.Add(new Tuple(items[1], items[2]));

}