Multi-variable switch statement in C#

Question

I would like use a switch statement which takes several variables and looks like this:

switch (intVal1, strVal2, boolVal3)
{
   case 1, \"hello\", false:
            


        

Answer 1

Per the C# language specification, the switch statement expression must resolve to one of sbyte, byte, sbyte, byte, short, ushort, int, uint, long, ulong, char, string, or an enum-type. This means you cannot switch on Tuple or other higher-order types.

You could try to pack the values together, assuming there is room. For example, suppose each of the integers is guaranteed to be in the range 0..9.

switch (intVal1 * 100 + intVal2 * 10 + (boolVal3 ? 1 : 0))
{
case 100: /* intVal1 = 1, intVal2 = 0, boolVal3 = false */ ... break;
case 831: /* intVal1 = 8, intVal2 = 3, boolVal3 = true */ ... break;
}