Equivalent of Tuple (.NET 4) for .NET Framework 3.5

Question

Is there a class existing in .NET Framework 3.5 that would be equivalent to the .NET 4 Tuple?

I would like to use it in order to return several values from a method, rather than create a struct.

Answer 1

No, not in .Net 3.5. But it shouldn't be that hard to create your own.

public class Tuple<T1, T2> {     public T1 First { get; private set; }     public T2 Second { get; private set; }     internal Tuple(T1 first, T2 second)     {         First = first;         Second = second;     } }  public static class Tuple {     public static Tuple<T1, T2> New<T1, T2>(T1 first, T2 second)     {         var tuple = new Tuple<T1, T2>(first, second);         return tuple;     } } 

UPDATE: Moved the static stuff to a static class to allow for type inference. With the update you can write stuff like var tuple = Tuple.New(5, "hello"); and it will fix the types for you implicitly.

Answer 2

I'm using this in my pre-4 projects:

public class Tuple<T1>   {      public Tuple(T1 item1)      {          Item1 = item1;      }         public T1 Item1 { get; set; }   }   public class Tuple<T1, T2> : Tuple<T1>   {      public Tuple(T1 item1, T2 item2) : base(item1)      {          Item2 = item2;      }       public T2 Item2 { get; set; }   }   public class Tuple<T1, T2, T3> : Tuple<T1, T2>   {      public Tuple(T1 item1, T2 item2, T3 item3) : base(item1, item2)      {          Item3 = item3;      }       public T3 Item3 { get; set; }   }   public static class Tuple   {      public static Tuple<T1> Create<T1>(T1 item1)      {          return new Tuple<T1>(item1);      }       public static Tuple<T1, T2> Create<T1, T2>(T1 item1, T2 item2)      {          return new Tuple<T1, T2>(item1, item2);      }       public static Tuple<T1, T2, T3> Create<T1, T2, T3>(T1 item1, T2 item2, T3 item3)      {          return new Tuple<T1, T2, T3>(item1, item2, item3);      }   }