C# 将通用列表<customObject> 序列化为文件

Question

我有一个类，它包含有关图片的信息，例如文件路径、哈希值、字节。 在另一个类中，我得到了一个通用列表，我在其中放置了包含图片信息的类中的对象。

那个类看起来像这样：

[Serializable()]
    class PicInfo : ISerializable
    {
        public string fileName { get; set; }
        public string completeFileName { get; set; }
        public string filePath { get; set; }
        public byte[] hashValue { get; set; }

        public PicInfo()
        { }

        public PicInfo(SerializationInfo info, StreamingContext ctxt)
        {
            this.fileName = (string)info.GetValue("fileName", typeof(string));
            this.completeFileName = (string)info.GetValue("completeFileName", typeof(string));
            this.filePath = (string)info.GetValue("filePath", typeof(string));
            this.hashValue = (byte[])info.GetValue("hashValue", typeof(byte[]));
        }

        public void GetObjectData(SerializationInfo info, StreamingContext ctxt)
        {
            info.AddValue("fileName", this.fileName);
            info.AddValue("completeFileName", this.completeFileName);
            info.AddValue("filePath", this.filePath);
            info.AddValue("hashValue", this.hashValue);
        }
    }

我的名单只是list<picinfo> pi = new list<picinfo>(); 序列化此列表的最简单方法是什么？

Answer 1

如果你想使用BinaryFormatter（我真的不建议这样做），你可以使用：

[Serializable]
class PicInfo
{
    public string fileName { get; set; }
    public string completeFileName { get; set; }
    public string filePath { get; set; }
    public byte[] hashValue { get; set; }

    public PicInfo()  { }
}
static class Program
{
    static void Main()
    {
        List<PicInfo> pi = new List<PicInfo>();
        pi.Add(new PicInfo {fileName = "foo.bar", hashValue = new byte[] {1, 2, 3}});

        var ser = new BinaryFormatter();
        using (var ms = new MemoryStream())
        {
            ser.Serialize(ms, pi);
            var bytes = ms.ToArray();
        }
    }
}

如果您想使用XmlSerializer（可能更适合IMO），但需要byte[]，那么：

public class PicInfo
{
    public string fileName { get; set; }
    public string completeFileName { get; set; }
    public string filePath { get; set; }
    public byte[] hashValue { get; set; }

    public PicInfo()  { }
}
static class Program
{
    static void Main()
    {
        List<PicInfo> pi = new List<PicInfo>();
        pi.Add(new PicInfo {fileName = "foo.bar", hashValue = new byte[] {1, 2, 3}});

        var ser = new XmlSerializer(typeof(List<PicInfo>));
        using (var ms = new MemoryStream())
        {
            ser.Serialize(ms, pi);
            var bytes = ms.ToArray();
        }
    }
}

就个人而言，我会使用 protobuf-net：

[ProtoContract]
public class PicInfo
{
    [ProtoMember(1)]public string fileName { get; set; }
    [ProtoMember(2)]public string completeFileName { get; set; }
    [ProtoMember(3)]public string filePath { get; set; }
    [ProtoMember(4)]public byte[] hashValue { get; set; }

    public PicInfo()  { }
}
static class Program
{
    static void Main()
    {
        List<PicInfo> pi = new List<PicInfo>();
        pi.Add(new PicInfo {fileName = "foo.bar", hashValue = new byte[] {1, 2, 3}});

        using (var ms = new MemoryStream())
        {
            Serializer.Serialize(ms, pi);
            var bytes = ms.ToArray();
        }
    }
}

尺寸：

• BinaryFormatter: 488 字节
• XmlSerializer：251 字节
• protobuf-net：16 个字节