try、catch和fianlly语法

try
                {
                
                }
                catch (IndexOutOfRangeException e)
                {
                  操作代码段1 ^_^
        }
                catch (Exception e)
                {
                    操作代码段2^_^
         }
                catch
                {
                    操作代码段3^_^
                }
                finally
                {
                    Console.WriteLine("Thank you");
                }