c# - 更改类的命名空间后无法使用 binaryFormatter 反序列化

Question

更改类的命名空间后，我无法再反序列化对象。我已经实现了 SerializationBinder。示例:

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();

我得到的异常是:

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

Answer 1

您忘记替换程序集名称:

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