用JSON或者XML等，不存在此问题，或者说相对容易解决此问题。

以下是指特定用Soap来进行序列化和反序列化中碰到的。

在一个程序集中：

class Program
{
    static void Main(string[] args)
    {
        //Serialize();
        A a = new A();
        string re = Tool.Serialize(a);
        Console.WriteLine(re);
        var b = Tool.Desrialize<A>(re);
        Console.WriteLine(b.ToString());
    }
}

class Tool
{
    public static string Serialize<T>(T obj)
    {
        try
        {
            IFormatter formatter = new BinaryFormatter();
            MemoryStream stream = new MemoryStream();
            formatter.Serialize(stream, obj);
            stream.Position = 0;
            byte[] buffer = new byte[stream.Length];
            stream.Read(buffer, 0, buffer.Length);
            stream.Flush();
            stream.Close();
            //return Convert.ToBase64String(buffer);
            string utf8String = Encoding.ASCII.GetString(buffer);
            return utf8String;
        }
        catch (Exception ex)
        {
            throw new Exception("fail:" + ex.Message);
        }
    }

public static T Desrialize<T>(string str) where T : class
    {
        T obj = null;

try
        {
            IFormatter formatter = new BinaryFormatter();
            byte[] buffer = Encoding.ASCII.GetBytes(str);
            //byte[] buffer = Convert.FromBase64String(str);
            MemoryStream stream = new MemoryStream(buffer);
            obj = (T)formatter.Deserialize(stream);
            stream.Flush();
            stream.Close();
        }
        catch (Exception ex)
        {
            throw new Exception("fail:" + ex.Message);
        }
        return obj;
    }
}

[Serializable]
public class A
{
    public string a;
}

在另一个程序集中：

class Program
{
    static void Main(string[] args)
    {
        string x = "AAEAAAD/AQAAAAAAAAAMAgAAAEpDb25zb2xlQXBwbGljYXRpb24zLCBWZXJzaW9uPTEuMC4wLjAsIEN1bHR1cmU9bmV1dHJhbCwgUHVibGljS2V5VG9rZW49bnVsbAUBAAAAFUNvbnNvbGVBcHBsaWNhdGlvbjMuQQEAAAABYQECAAAACgs=";

var s = Tool.Desrialize<A>(x);
        Console.WriteLine(s.ToString());
    }
}

class Tool
{
    public static string Serialize<T>(T obj)
    {
        try
        {
            IFormatter formatter = new BinaryFormatter();
            MemoryStream stream = new MemoryStream();
            formatter.Serialize(stream, obj);
            stream.Position = 0;
            byte[] buffer = new byte[stream.Length];
            stream.Read(buffer, 0, buffer.Length);
            stream.Flush();
            stream.Close();
            return Convert.ToBase64String(buffer);
        }
        catch (Exception ex)
        {
            throw new Exception("fail:" + ex.Message);
        }
    }

public static T Desrialize<T>(string str) where T : class
    {
        T obj = null;
        try
        {
            IFormatter formatter = new BinaryFormatter();
            byte[] buffer = Convert.FromBase64String(str);
            MemoryStream stream = new MemoryStream(buffer);
            obj = (T)formatter.Deserialize(stream);
            stream.Flush();
            stream.Close();
        }
        catch (Exception ex)
        {
            throw new Exception("fail:" + ex.Message);
        }
        return obj;
    }
}

[Serializable]
public class A
{
    public string a;
}

无非就是替换其中关于类型程序集信息的替换。

当然，此解决方案的一个问题是，随着每次程序集版本号的修改，代码中的 Replace 部分也要做修改。蛋疼。