使用BinaryFormatter反序列化FileInfo对象C＃

Question

这是我用来反序列化的两个函数，一个来自networkStream，另一个来自文件流

public static FileInfo recMetaSerialized(Socket s)
    {
        FileInfo o = null;
        try {
            BinaryFormatter bf = new BinaryFormatter();
            NetworkStream stm = new NetworkStream(s);
            o = (FileInfo)bf.Deserialize(stm);
            Console.WriteLine("File info received recMetaSerialized: " + o.FullName + o.LastWriteTime);
            return o;
        }
        catch(Exception e)
        {
            Console.WriteLine("Error in deserialization from the network. " +e.Message + e.StackTrace);
        }
        return null;
    }


public static FileInfo readMetaSerialized(string file)
    {
        FileInfo o = null;
        try
        {
            BinaryFormatter bf = new BinaryFormatter();
            FileStream stm = new FileStream(file,FileMode.Open);
            o = (FileInfo)bf.Deserialize(stm);
            Console.WriteLine("File info received readMetaSerialized : " + o.FullName + o.LastWriteTime);
            return o;
        }
        catch (Exception e)
        {
            Console.WriteLine("Error in deserialization from the file. " + e.Message + e.StackTrace);
        }
        return null;
    }

我收到一些错误，因为FileInfo的FullName属性被正确打印出来，而LastWriteTime是错误的。在序列化对象的函数中，属性被正确序列化。

public static void saveMetaSerialized(string file, FileInfo obj)
    {
        if (obj == null)
            throw new Exception("Error! File info obj is null!");
        Console.WriteLine("File info received saveMetaSerialized: " + obj.FullName + obj.LastWriteTime);
        BinaryFormatter bf = new BinaryFormatter();
        try {
            using (FileStream ms = new FileStream(file, FileMode.Create))
            {
                bf.Serialize(ms, obj);

            }
        }            
        catch (Exception e)
        {
            Console.WriteLine("Error in file ser of file {0} : {1}", obj.Name, e.Message);
        }
        Console.WriteLine("Serialization over the net of file {0} completed.", obj.Name);
    }

public static void sendMetaSerialized(Socket s, string file)
    {

        FileInfo fi = new FileInfo(file);
        Console.WriteLine("File info received sendMetaSerialized: " + fi.FullName + fi.LastWriteTime);
        BinaryFormatter bf = new BinaryFormatter();
        try {
            bf.AssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple;
            NetworkStream stm = new NetworkStream(s);
            bf.Serialize(stm, fi);
        }
        catch (Exception e)
        {
            Console.WriteLine("Error in net ser of file {0} : {1}", fi.Name, e.Message);
        }
        Console.WriteLine("Serialization over the net of file {0} completed.", fi.Name);
    }