.net - Using predicate to find strings that start with a specific letter (C#) -

i'm quite new using predicates finding specific within collection. here's example:

static void findpersons(string firstletter)         {             list<string> names = new list<string>()         {"marcus", "john", "jesse", "lance", "aaron", "archibald", "victor"         };                list<string> names2 = names.findall(a => a.startswith(firstletter));              foreach (var name in names2)             {                 console.writeline(name);             }         } 

i'd call method within main:

findpersons("a"); 

i had use string first letter because startswith takes string parameter (or use char , tostring().

how can using shorter syntax? 1 more question - generally, how during work use predicates find specific objects within collection? thanks.

just use console.writeline(string.join<string>("\n", result)); following method that.

    static void findpersons(string firstletter)     {         list<string> names = new list<string>()         {"marcus", "john", "jesse", "lance", "aaron", "archibald", "victor"         };          list<string> result = names.where(a => a.startswith(firstletter, stringcomparison.invariantcultureignorecase)).tolist();         console.writeline(string.join<string>("\n", result));      }