C# switch variable initialization: Why does this code NOT cause a compiler error or a runtime error?

Question

...
case 1:
   string x = \"SomeString\";
   ...
   break;
case 2:
   x = \"SomeOtherString\";
   ...
   break;
...

Is there something that

Answer 1

It looks like the scoping of variables is within the switch, not the case, probably because cases can be stacked. Notice if you try to reference x outside of the switch it will fail.