处理有返回值的和return的asp.net写法

 SqlConnection   conPortal   =   new   SqlConnection(CommunityGlobals.ConnectionString);  
                          SqlCommand   cmdAdd   =   new   SqlCommand(   "Community_DiscussAddPost",   conPortal);  
                          cmdAdd.CommandType   =   CommandType.StoredProcedure;  
                           
                          cmdAdd.Parameters.Add("@RETURN_VALUE",   SqlDbType.Int).Direction   =   ParameterDirection.ReturnValue;   //处理return的返回值
                          cmdAdd.parameters.Add("@outputvalue",sqlDbType.Int);
                          cmdAdd.Parameters[].Direction=parameterDirectionOutput;
                            /**上面两句等同于cmdAdd.Parameters.Add("@outputvalue",sqlDbType.Int).Direction=ParameterDirectionOutput;
      **/
                    cmdAdd.Parameters.Add("@communityID",   CommunityGlobals.CommunityID);  
                          cmdAdd.Parameters.Add("@sectionID",   sectionID);