Casting new tuple to old one gives compilation error

Question

With the code below,

class Program
{
    static void Main(string[] args)
    {
        Tuple<int, int> test = TupleTest();

    }

    static (int, int) TupleTest()
    {
        return (1, 2);
    }

I am getting following compile time error.

Error CS0029 Cannot implicitly convert type '(int, int)' to 'System.Tuple < int, int >'

Does it mean the new version of Tuple is not compatible with the old version implicitly? Or am I doing something wrong here?

Answer 1

• Use ValueTuple instead:

ValueTuple test = TupleTest();

• Use the ToTuple extension method (ToValueTuple is also available):

Tuple test = TupleTest().ToTuple();