ExecuteReader在执行有输出参数的存储过程时拿不到输出参数

public static IEnumerable<T> SqlDataReaderToList<T>(SqlDataReader reader) where T : new()
        {
            using (reader)
            {
                if (reader.HasRows)
                {
                    IList<T> list = new List<T>();
                    while (reader.Read())
                    {
                        T t = new T();
                        PropertyInfo[] propertys = t.GetType().GetProperties();
                        foreach (PropertyInfo pi in propertys)
                        {
                            string tempName = pi.Name;
                            //设置 RowFilter
                            reader.GetSchemaTable().DefaultView.RowFilter = string.Format("ColumnName='{0}'", tempName);
                            //判断SqlDataReader是否存在某列
                            if (reader.GetSchemaTable().DefaultView.Count > 0)
                            {
                                if (!pi.CanWrite)
                                {
                                    continue;
                                }
                                var value = reader[tempName];
                                if (value != DBNull.Value)
                                {
                                    pi.SetValue(t, value, null);
                                }
                            }
                        }
                        list.Add(t);
                    }
                    return list;
                }
            }
            return null;
        }