Should ‘using’ statements be inside or outside the namespace in C#

• Whether you put the return statement inside or outside a lock statement, It doesn’t make any difference; they’re both translated to the same thing by the compiler.

  void example()  
       {  
         int testData;  
         lock (foo)  
         {  
           testData = ...;  
         }  
         return testData  

• It is recommended to put the return inside the lock. Otherwise you risk another thread entering the lock and modifying your variable before the return statement, therefore making the original caller receive a different value than expected.

  void example()  
     {  
       lock (foo)  
       {  
         return ...;  
       }  
     }