c# - 使用DataContractSerializer序列化，反序列化不回来

Question

我有以下两个功能:

public static string Serialize(object obj)
{
    DataContractSerializer serializer = new DataContractSerializer(obj.GetType());
    MemoryStream memoryStream = new MemoryStream();
    serializer.WriteObject(memoryStream, obj);
    return Encoding.UTF8.GetString(memoryStream.GetBuffer());
}

public static object Deserialize(string xml, Type toType)
{
    MemoryStream memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(xml));
   // memoryStream.Position = 0L;
    XmlDictionaryReader reader = XmlDictionaryReader.CreateTextReader(memoryStream, Encoding.UTF8, new XmlDictionaryReaderQuotas(), null);
    DataContractSerializer dataContractSerializer = new DataContractSerializer(toType);
    return dataContractSerializer.ReadObject(reader);
}

第一个似乎可以很好地将对象序列化为 xml 字符串。 XML 看起来有效，没有损坏的标签，开头或结尾没有空格等。现在第二个函数不想将我的 xml 字符串反序列化回对象。在最后一行我得到:

There was an error deserializing the object of type [MY OBJECT TYPE HERE]. The data at the root level is invalid. Line 1, position 1.

我做错了什么？我试过几次重写 Deserialize 函数，似乎总是同一种错误。谢谢!

哦，这就是我调用这 2 个函数的方式:

SomeObject so = new SomeObject();
string temp = SerializationManager.Serialize(so);
so = (SomeObject)SerializationManager.Deserialize(temp, typeof(SomeObject));

Answer 1

这是我一直以来的做法:

    public static string Serialize(object obj) {
        using(MemoryStream memoryStream = new MemoryStream())
        using(StreamReader reader = new StreamReader(memoryStream)) {
            DataContractSerializer serializer = new DataContractSerializer(obj.GetType());
            serializer.WriteObject(memoryStream, obj);
            memoryStream.Position = 0;
            return reader.ReadToEnd();
        }
    }

    public static object Deserialize(string xml, Type toType) {
        using(Stream stream = new MemoryStream()) {
            byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
            stream.Write(data, 0, data.Length);
            stream.Position = 0;
            DataContractSerializer deserializer = new DataContractSerializer(toType);
            return deserializer.ReadObject(stream);
        }
    }