用XmlSerializer序列化和反序列化时的问题

// <summary>
        /// 将一个ArrayList序列化成xml字符串
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        private byte[] myXmlSerializer(ArrayList list)
        {
            byte[] array = null;
            try
            {       
                
                XmlSerializer ser = new XmlSerializer(typeof(Operate.Entity));
                MemoryStream mem = new MemoryStream();
                XmlTextWriter writer = new XmlTextWriter(mem, Encoding.Default);
                foreach(object obj in list)
                {
                    ser.Serialize(mem,obj);
                }
                array = new byte[mem.Length];
                mem.Position = 0;
                mem.Read(array, 0, (int)mem.Length); 
                mem.Close();
                writer.Close();
            }
            catch(Exception ex)
            {
                txtState.Text = "序列化时出现错误:" + ex.ToString() + "\r\n" + txtState.Text;
                return null;
            }
            return array;
        }







/// <summary>
        /// 将一个xml字符串反序列化成ArrayList
        /// </summary>
        /// <param name="s"></param>
        /// <param name="t"></param>
        /// <returns></returns>
        private ArrayList myXmlDeserialize(byte[] bytes)
        {
            ArrayList list = null;
            try
            {
                XmlSerializer mySerializer = new XmlSerializer(typeof(ServerOperate.Entity));
                
                StreamReader mem = new StreamReader(new MemoryStream(bytes), System.Text.Encoding.Default);
                //while (stream.Position != stream.Length)
                //{
                  list.Add(mySerializer.Deserialize(mem));
                //}
                //list = (ArrayList)mySerializer.Deserialize(mem);
            }catch(Exception ex)
            {
                txtState.Text = "反序列化时出现错误:" + ex.ToString() + "\r\n" + txtState.Text;
                return null;
            }
            return list;
        }

上面是我序列化和返序列化的方法，但反序列化的时候，提示:
反序列化时出现错误:System.InvalidOperationException: XML 文档(6, 12)中有错误。 ---> System.Xml.XmlException: 意外的 XML 声明。XML 声明必须是文档中的第一个节点并且在它之前不允许出现空白字符。 行 6，位置 12。
   在 System.Xml.XmlTextReaderImpl.Throw(Exception e)
   在 System.Xml.XmlTextReaderImpl.Throw(String res, String arg)
   在 System.Xml.XmlTextReaderImpl.ParsePI(BufferBuilder piInDtdStringBuilder)
   在 System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   在 System.Xml.XmlTextReaderImpl.Read()
   在 System.Xml.XmlTextReader.Read()
   在 System.Xml.XmlReader.ReadEndElement()
   在 System.Xml.Serialization.XmlSerializationReader.ReadEndElement()
   在 Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderEntity.Read2_Entity(Boolean isNullable, Boolean checkType)
   在 Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderEntity.Read3_Entity()
   --- 内部异常堆栈跟踪的结尾 ---
   在 System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   在 System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle)
   在 System.Xml.Serialization.XmlSerializer.Deserialize(TextReader textReader)
   在 ServerOperate.Server.myXmlDeserialize(Byte[] bytes) 位置 D:\workround\ServerOperate\ServerOperate\Server.cs:行号 366


如何解决?

2 个解决方案

#1

把类的声明也贴出来,

#2

问题已解决...谢谢啦