ProtoBuf.net基类的属性不包括当序列化派生类 [英] ProtoBuf.net Base class properties is not included when serializing derived class

问题描述

采用最新的2.0测试版ProtoBuf.net的版本我想序列化派生类（只是举例），我得到空文件。为什么基类的属性不是序列？

  [ProtoContract]
[可序列化]
公共类Web2PdfClient：Web2PdfEntity
{

}

[ProtoContract]
[可序列化]
公共类Web2PdfEntity：EngineEntity
{

    [ProtoMember（1）]
    公共字符串名称{获取;组; }
    [ProtoMember（2）]
    公共字符串卷曲{获得;组; }
    [ProtoMember（3）]
    公共字符串文件名{获得;组; }

}


[ProtoContract]
[可序列化]
公共类EngineEntity
{

    公共BOOL结果{获得;组; }
    公共字符串的ErrorMessage {获得;组; }
    公共BOOL IsMembershipActive {获得;组; }
    公众诠释ConversionTimeout {获得;组; }
    公共字节[] FileStorage {获得;组; }
}
 

在使用低于code，我得到空文件序列化类。

  VAR Web2PDF =新Web2PdfClient
                          {
                              卷曲=htt​​p://www.google.com
                              文件名=的test.txt
                          };
        使用（var文件= File.Create（@C：\用户\管理\项目\ TEMP \ TEST.bin，烧写））
        {
            Serializer.Serialize（文件，Web2PDF）;

        }
 

解决方案

其实，我就是没有抛出异常很惊讶 - 我会调查！为了使该工作，基础类型必须有一种独特的方式来表示每个子类型。这可以通过属性被指定，或（在v2）的运行时。例如：

  [ProtoContract]
[可序列化]
公共类Web2PdfClient：Web2PdfEntity
{

}

[ProtoContract]
[ProtoInclude（7的typeof（Web2PdfClient））]
[可序列化]
公共类Web2PdfEntity：EngineEntity
{...}
 

有没有什么特别的 7 只是它不应该与该类型定义的任何其他成员发生冲突。多个亚型可以定义（具有不同的标签）。还要注意的是protobuf网不看 [Serializable接口] ，所以你不需要，除非你使用了的BinaryFormatter （或类似）。

同样， EngineEntity 应该宣传的及其的预期亚型，并应注明成员序列化（以及针对其标签）。

Using latest 2.0 beta version of ProtoBuf.net I am trying to serialize derived class(just example) and I get empty file. Why base class properties is not serialized?

[ProtoContract]
[Serializable]
public class Web2PdfClient : Web2PdfEntity
{

}

[ProtoContract]
[Serializable]
public class Web2PdfEntity : EngineEntity
{

    [ProtoMember(1)]
    public string Title { get; set; }
    [ProtoMember(2)]
    public string CUrl { get; set; }
    [ProtoMember(3)]
    public string FileName { get; set; }

}


[ProtoContract]
[Serializable]
public class EngineEntity
{

    public bool Result { get; set; }
    public string ErrorMessage { get; set; }
    public bool IsMembershipActive { get; set; }
    public int ConversionTimeout { get; set; }
    public byte[] FileStorage { get; set; }
}

While using code below to serialize class I get empty file.

var Web2PDF = new Web2PdfClient
                          {                                
                              CUrl = "http://www.google.com",
                              FileName = "test.txt"
                          };
        using (var file = File.Create(@"C:\Users\Administrator\Projects\temp\test.bin"))
        {
            Serializer.Serialize(file, Web2PDF);

        }

解决方案

Actually, I'm quite surprised that didn't throw an exception - I will investigate! In order for that to work, the base-type must have a unique way to indicate each of the sub-types. This can be specified via attributes, or (in v2) at runtime. For example:

[ProtoContract]
[Serializable]
public class Web2PdfClient : Web2PdfEntity
{

}

[ProtoContract]
[ProtoInclude(7, typeof(Web2PdfClient))]
[Serializable]
public class Web2PdfEntity : EngineEntity
{ ... }

There's nothing special about 7 except that it shouldn't collide with any other members defined for that type. Multiple subtypes can be defined (with different tags). Note also that protobuf-net doesn't look at [Serializable], so you don't need that unless you are also using BinaryFormatter (or similar).

Similarly, EngineEntity should advertise its expected subtypes, and should indicate the members to serialize (and against which tag).

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