c# – 更改类的名称空间后无法使用binaryFormatter反序列化

参见英文答案 > duplicated id with fragment3个
> Is it possible to recover an object serialized via “BinaryFormatter” after changing class names?1个
更改我的类的命名空间后,我不能再反序列化对象.我已经实现了SerializationBinder.例：

public class TypeNameConverter : SerializationBinder
{
    public override Type BindToType(string assemblyName,string typeName)
    {
        typeName = typeName.Replace("MyOldNamespace","MyNewNamespace");
        return Type.GetType(string.Format("{0},{1}",typeName,assemblyName));
    }
}

BinaryFormatter bf = new BinaryFormatter();
bf.Binder = new TypeNameConverter();

我得到的例外是：

‘System.Runtime.Serialization.TypeLoadExceptionHolder’ cannot be converted to type ‘MyNewNamespace.MyClass’

class TypeNameConverter : SerializationBinder
{
    public override Type BindToType(string assemblyName,"MyNewNamespace");
        assemblyName = assemblyName.Replace("MyOldNamespace",assemblyName));
    }
}