XML序列化實體和反序列化

public class CSerializeToXml
    {
        /// <summary>     
        /// 從某一XML檔案反序列化到某一類型   
        /// </summary>    
        /// <param name="filePath">待反序列化的XML檔案名稱</param>  
        /// <param name="type">反序列化出的</param>  
        /// <returns></returns>    
        public T DeserializeFromXml<T>(string filePath)
        {
            try
            {
                if (!System.IO.File.Exists(filePath))
                    throw new ArgumentNullException(filePath + " not Exists");
                using (System.IO.StreamReader reader = new System.IO.StreamReader(filePath))
                {
                    System.Xml.Serialization.XmlSerializer xs = new System.Xml.Serialization.XmlSerializer(typeof(T));
                    T ret = (T)xs.Deserialize(reader);
                    return ret;
                }
            }
            catch (Exception ex)
            {
                return default(T);
            }
        }

        /// <summary>     
        /// XML序列化某一類型到指定的檔案   
        /// /// </summary>   
        /// /// <param name="filePath"></param>   
        /// /// <param name="obj"></param>  
        /// /// <param name="type"></param>   
        public void SerializeToXml<T>(string filePath, T obj)
        {
            try
            {
                using (System.IO.StreamWriter writer = new System.IO.StreamWriter(filePath))
                {
                    System.Xml.Serialization.XmlSerializer xs = new System.Xml.Serialization.XmlSerializer(typeof(T)); xs.Serialize(writer, obj);
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.ToString());
            }
        }

    }