c# - Get invalid parameters from commandline parser -

i use commandline parser nuget.

var options = new options(); bool isinputvalid = commandline.parser.default.parsearguments(args, options); 

how parameters invalid?

in 1.9.71 dont' see option can fetch invalid tokens arguments after parsing. if upgrade -pre release version i.e.

<package id="commandlineparser" version="2.0.275-beta" targetframework="net45" /> 

this version gives flexibility more parsed results. can find invalid token below:

 var result = commandline.parser.default.parsearguments<options>(args);   result.mapresult(         options =>         {             // optios             return 0;         },         errors =>         {             var invalidtokens = errors.where(x => x tokenerror).tolist();             if(invalidtokens != null)             {                 invalidtokens.foreach(token => console.writeline(((tokenerror)token).token));             }              return 1;         });