C# Switch/case share the same scope?
.net, .net-4.0, c#, clr, switch-statement
Solution
In C# the scope is determined solely by braces. If there are none, there is no separate scope. With `switch`/`case` there is obviously none. What you call »region of execution« has nothing to do at all with where you can refer to a variable. For a contrived example:
int x = 1;
goto foo;
// This part gets never executed but you can legally refer to x here.
foo:
You can do the following, though, if you like:
switch (temp)
{
case "1":
{
int tmpint = 1;
break;
}
case "2":
{
int tmpint = 1;
break;
}
}
In fact, for some `switch` statements I do that, because it makes life much easier by not polluting other `case`s. I miss Pascal sometimes ;-)
Regarding your attempted fallthrough, you have to make that explicit in C# with `goto case "2"`.
Problem
Possible Duplicate: Variable declaration in c# switch statement I've always wonderd : when i write : ``` switch (temp) { case "1": int tmpInt = 1; break; } ``` the `case "1":` region has a region of code which is executed ( until break) now , a waterfall from above can't get into a `case of 2` e.g. : ``` switch (temp) { case "1": int tmpInt = 1; case "2": break; } ``` //error : break return is missing. So i assume , they have different regions of executions ( case....break). so why this errors appears ? //conflict variable tmpInt is defined below. p.s. this is just a silly question , still interesting.