.net - How build a string in C# with escape characters -

i'm trying build directory path injecting userid , portalid needed.

string userid = httpcontext.current.request.params["userid"]; string portalid = httpcontext.current.request.params["portalid"];  // acutal path ---> string foldername = @"c:\dotnetnuke 8.0\portals\0\users\017\17\17"; string foldername = "c:\\dotnetnuke 8.0\\portals\\" + portalid + "\\users\\0" + userid + "\\" + userid + "\\" + userid; httpcontext.current.response.write(foldername); // what's returned ---> c:\dotnetnuke 8.0\portals\\users\0\\ 

what have correct. looks portalid , userid null or empty string "". there easier ways escape, though - if use @"some \ string", thing need escape " "".

examples:

string userid = "17"; string portalid = "0"; string foldername = "c:\\dotnetnuke 8.0\\portals\\" + portalid + "\\users\\0" + userid + "\\" + userid + "\\" + userid; 

gives

c:\dotnetnuke 8.0\portals\0\users\017\17\17 

as does:

string foldername = @"c:\dotnetnuke 8.0\portals\" + portalid + @"\users\0" + userid + @"\" + userid + @"\" + userid; 

as does:

string foldername = $@"c:\dotnetnuke 8.0\portals\{portalid}\users\0{userid}\{userid}\{userid}";