c# - How do I get the assigned fixed length of the field from FileHelpers library? -

i using filehelpers library write output files. here sample code snippet:

 public class myfilelayout  {     [fieldfixedlength(2)]     private string prefix;      [fieldfixedlength(12)]     private string customername;  } 

in code flow, know each of fields assigned length @ run time, eg: 12 customername.

is there way values above filehelpers library?

i don't think need library te read fieldattribute properties.

        public class myfilelayout         {             [fieldfixedlength(2)]             public string prefix;              [fieldfixedlength(12)]             public string customername;         }             type type = typeof(myfilelayout);         fieldinfo fieldinfo = type.getfield("prefix");         object[] attributes = fieldinfo.getcustomattributes(false);          fieldfixedlengthattribute attribute = (fieldfixedlengthattribute)attributes.firstordefault(item => item fieldfixedlengthattribute);          if (attribute != null)         {             // read info         } 

i made method it:

    public bool trygetfieldlength(type type, string fieldname, out int length)     {         length = 0;          fieldinfo fieldinfo = type.getfield(fieldname);          if (fieldinfo == null)             return false;          object[] attributes = fieldinfo.getcustomattributes(false);          fieldfixedlengthattribute attribute = (fieldfixedlengthattribute)attributes.firstordefault(item => item fieldfixedlengthattribute);          if (attribute == null)             return false;          length = attribute.length;         return true;     } 

usage:

        int length;         if (trygetfieldlength(typeof(myfilelayout), "prefix", out length))         {             show(length);         } 

ps: fields / properties must public in order read attributes reflection.