c# - 反序列化返回空对象，使用Filestream和Binaryformatter

Question

问题是反序列化时我在存储库中得到零计数(没有任何错误)

[Serializable]
class RegexRepository : Dictionary<string, string>
{
    public RegexRepository()
    {
        //this.Add("All", "ALL");
        //this.Add("Name", @"Name:(?<data>[\s\w]+)Email");
        //this.Add("Email", @"Email:(?<data>[\w\s@]+\.com)");
        //this.Add("Phone Number", "Phone:(?<data>\\d+)");
    }
    protected RegexRepository(SerializationInfo info, StreamingContext context)
    {

    }
    private static RegexRepository repo = new RegexRepository();
    public static RegexRepository Instance
    {
        get
        {
            if (repo == null)
            {
                repo = new RegexRepository();
            }
            return repo;
        }
    }
    string FileName = AppDomain.CurrentDomain.BaseDirectory + "BinaryFile.dat";
    public void Serialize()
    {
        using (FileStream ms = new FileStream(FileName, FileMode.OpenOrCreate))
        {
            var bf = new BinaryFormatter();
            bf.Serialize(ms, this);
        }
    }
    public void Deserialize()
    {
        if (System.IO.File.Exists(FileName))
        {
            using (FileStream ms = new FileStream(FileName, FileMode.Open))
            {
                var bf = new BinaryFormatter();
                repo = (RegexRepository)bf.Deserialize(ms);
               //Here i get zero count in repo, checked while debugging
            }
        }
    }
}

我已经看到BinaryFile.dat不为空，我可以在其中看到一些记录。请帮助我

Answer 1

您需要从流式构造函数中调用基本构造函数:

    protected RegexRepository(SerializationInfo info, StreamingContext context)
        : base(info, context)
    {
    }

此外，FileName 可能不应该是一个字段，您在类中为其分配内存，这是没有必要的。相反，静态属性似乎更有意义:

    static string FileName
    {
        get
        {
            return AppDomain.CurrentDomain.BaseDirectory + "BinaryFile.dat";
        }
    }