Split into string array only the key by comma and not values c#

Question

This is my String and i have problems when splitting into string array with comma seperated values for keys

{ Yr = 2019, Mth = DECEMBER , SeqN = 0, UComment = tet,tet1, OComment = test,test1, FWkMth = WK, FSafety = Y, FCustConsign = Y, FNCNRPull = 0, FNCNRPush = 0, CreatedTime = 2020-01-03 06:16:53 }

when i try to use string.Split(',') i get "Ucomment = tet","tet1" as seperate array. But i need to have split string[] when seperated by comma

UComment = tet,tet1 OComment = test,test1

I have tried using the regex ,(?=([^\"]\"[^\"]\")[^\"]$)" but it didnot work.

@tim-biegeleisen, it is sring array and it will be like "Yr = 2019", "Mth = DECEMBER", "SeqN = 0", "UComment = tet,tet1" — Marid
– Marid, Commented Jan 3, 2020 at 6:59

Tim Biegeleisen · Accepted Answer · 2020-01-03 07:04:18Z

You may try matching on the regex pattern \S+\s*=\s*.*?(?=\s*,\s*\S+\s*=|\s*\}$):

string input = "{ Yr = 2019, Mth = DECEMBER , SeqN = 0, UComment = tet,tet1, OComment = test,test1, FWkMth = WK, FSafety = Y, FCustConsign = Y, FNCNRPull = 0, FNCNRPush = 0, CreatedTime = 2020-01-03 06:16:53 }";
Regex regex = new Regex(@"\S+\s*=\s*.*?(?=\s*,\s*\S+\s*=|\s*\}$)");
var results = regex.Matches(input);
foreach (Match match in results)
{
    Console.WriteLine(match.Groups[0].Value);
}

This prints:

Yr = 2019
Mth = DECEMBER
SeqN = 0
UComment = tet,tet1
OComment = test,test1
FWkMth = WK
FSafety = Y
FCustConsign = Y
FNCNRPull = 0
FNCNRPush = 0
CreatedTime = 2020-01-03 06:16:53

Here is an explanation of the regex pattern used:

\S+                        match a key
\s*                        followed by optional whitespace and
=                          literal '='
\s*                        more optional whitespace
.*?                        match anything until seeing
(?=\s*,\s*\S+\s*=|\s*\}$)  that what follows is either the start of the next key/value OR
                           is the end of the input

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