Tuples can be used to return multiple values from a method without using out parameters. In the following example AddMultiply
is used to return two values (sum, product).
void Write()
{
var result = AddMultiply(25, 28);
Console.WriteLine(result.Item1);
Console.WriteLine(result.Item2);
}
Tuple<int, int> AddMultiply(int a, int b)
{
return new Tuple<int, int>(a + b, a * b);
}
Output:
53
700
Now C# 7.0 offers an alternative way to return multiple values from methods using value tuples More info about ValueTuple
struct.