c#異常処理文try,catch,finally実行時の相互関係を記述する

try       ,     "  "    .

catch            ,    を げ す,       ,         ,  catch        ,
              ,       ,              ,       catch,  catch(    )  
   catch       ,              (        catchl ).  
  try      ,  try        try            ,     catch.


finally try      (     )   catch   (     ),    finally     ,    .