c# - How do I iterate through a directory stopping at a folder that excludes a specific character? -

i iterate through directory , stop @ first folder doesn't end in "@"

this tried far (based on question site):

string rootpath = "d:\\pending\\engineering\\parts\\3"; string targetpattern = "*@";  string fullpath = directory                  .enumeratefiles(rootpath, targetpattern, searchoption.alldirectories)                                                                 .firstordefault();  if (fullpath != null)     console.writeline("found " + fullpath); else     console.writeline("not found"); 

i know *@ isn't correct, no idea how part.
i'm having problems searchoption visual studio says "it's ambiguous reference."

eventually want code name of folder , use rename different folder.

final solution

i ended using combination of dasblikenlight , user3601887

string fullpath = directory                    .getdirectories(rootpath, "*", system.io.searchoption.topdirectoryonly)                    .firstordefault(fn => !fn.endswith("@")); 

since enumeratefiles pattern not support regular expressions, need directories, , filtering on c# side:

string fullpath = directory     .enumeratefiles(rootpath, "*", searchoption.alldirectories)                                                    .firstordefault(fn => !fn.endswith("@"));