Thread: Question about the "switch" statement

Hey guys, quick question.

When you use a switch statement, does it evaluate the condition once or every time it is tested against a case? I imagine it would be the former, since that's much more efficient, but I need to make sure. For example:

Code:

switch (random.Next(0, 2))
{
     case 0:
          foo();
          break;
     case 1:
          foo_2();
          break;
}

Would this code test each case against a different random number, or would it store the random number and then test it against each case? Either way it's a simple fix; if it's the former, I can just do:

Code:

int randomNumber = random.Next(0, 2);

switch (randomNumber)
{
     // stuff
}

The better code depends on when the switch statement and how the switch statement checks the cases. That's my question.

Thanks in advance