.list is just Extension so don’t worry about that
there is direct method to write Array to file
System.IO.File.WriteAllLines(nwPath, nw_TCList);
And If you want to have .list Extension
give that in path param
E.g.
System.IO.File.WriteAllLines("D://Data.list", nw_TCList);
that did trick for me
4
solved How to create .list file in C# [closed]