using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        var item = " john smith (idjs) <js@email.com>";

        String[] patternArr =

        {

            "(?:\\s*)", 

            "(?<fullname>[a-zA-Z\\s]*?[a-zA-Z])", // captures the full name part

            "(?:\\s*)",

            "(?<idjs>\\([a-zA-Z]*\\))", // captures the idjs part

            "(?:.*)",

            "(?<email>(?:<).*@.*(?:>))" //captures the email part

        };

​

        var pattern = String.Join("", patternArr);

        var m = Regex.Match(item, pattern);

​

        if (m.Success)

        {

            Console.WriteLine("fullname: {0}", m.Groups["fullname"]);

            Console.WriteLine("idjs: {0}", m.Groups["idjs"]);

            Console.WriteLine("email: {0}", m.Groups["email"]);

        }

    }

}