CSharp C# Tuple Linq search get IEnumerable from List

CSharp C# Tuple Linq search get IEnumerable from List

meta: predicate

Output:

joe_Now.Item1 = Joe joe_Now.Item2 = Joe_First joe_Now.Item1 = Joe joe_Now.Item2 = Joe_Second press enter to finish

Program.cs:

using System; using System.Collections.Generic; using System.Linq; namespace ConsoleStuff {     class Program     {         static void Main(string[] args)         {             List<Tuple<string, string>> tupleCollectionOptionalClasses = new List<Tuple<string, string>>();             tupleCollectionOptionalClasses.Add(new Tuple<string, string>("Hank","Hank_First"));             tupleCollectionOptionalClasses.Add(new Tuple<string, string>("Joe", "Joe_First"));             tupleCollectionOptionalClasses.Add(new Tuple<string, string>("Mary", "Mary_First"));             tupleCollectionOptionalClasses.Add(new Tuple<string, string>("Joe", "Joe_Second"));             tupleCollectionOptionalClasses.Add(new Tuple<string, string>("Hank", "Hank_Second"));             IEnumerable<Tuple<string, string>> tuple_JustJoe = tupleCollectionOptionalClasses.Where(                   delegate(Tuple<string, string> mapNowFinder)                   {                       return mapNowFinder.Item1 == "Joe";  // case sensitive                   }                   );             foreach (Tuple<string, string> joe_Now in tuple_JustJoe)             {                 Console.WriteLine("joe_Now.Item1 = {0} joe_Now.Item2 = {1}", joe_Now.Item1, joe_Now.Item2);             }             Console.WriteLine();             Console.WriteLine("press enter to finish");             Console.ReadLine();         }     } }