获取存储过程返回值

try
            {
                var sValue = "0";
                var db = DatabaseFactory.CreateDatabase();
                var cmd = db.GetStoredProcCommand("proc_GetYzmInfo");
                db.AddInParameter(cmd, "phone", DbType.String, mYzm.Phone);
                db.AddParameter(cmd, "@Result", DbType.String, ParameterDirection.ReturnValue, "", DataRowVersion.Current, null);

                //db.AddOutParameter(cmd, "@value", DbType.String, 20);
                db.ExecuteDataSet(cmd);

                return cmd.Parameters["@Result"].Value.ToString();
            }
            catch (Exception e)
            {
                Log.Error("获取验证码发送记录出错 -> " + e);
                return null;
            }

注意这里面分两种类型，ParameterDirection.ReturnValue为返回Return类型，db.AddOutParameter为返回Output类型