c# - How to find a match with 2 comma separated strings with LINQ -

i new linq.

i trying compare 2 comma separated strings see if contain matching value.

i have string contains list of codes. masterformlist = "aaa,bbb,ccc,fff,ggg,hhh"

i trying compare list of objects. in given field formcode contains comma separated string of codes. want see if @ lease 1 code in string in masterformlist. how write linq accomplish this?

right have:

resultslist = (from r in resultslist r.formcodes.split(',').contains(masterformlist) select r).tolist(); 

it not return matching items list.

please advise

you'd need build collection of items search for, check see if there contained within set:

var masterset = new hashset<string>(masterformlist.split(','));  resultslist = resultslist                  .where(r => r.formcodes.split(',')                               .any(code => masterset.contains(code)))                  .tolist();