C# ISerializable 问题

Question

我打算使用序列化来做克隆。我必须让我的类 ISerializable。但是它的父类(super class)和所有引用的变量类呢？我需要让它们全部 ISerializable 吗？

如果我使用 ISerializable。我必须实现 GetObjectData()，我应该在该方法中放入什么？留空可以吗？

Answer 1

Unless you mark the class with the [Serializable] attribute, this interface must be implemented by all classes with serialized instances. Use the ISerializable interface if you want your class to control its own serialization and de-serialization.

GetObjectData() 让您控制序列化过程。

GetDataObject, to which you pass a SerializationInfo object and a StreamingContext object. The GetDataObject method will then populate the SerializationInfo object with the data necessary for the serialization of the target object.

例子:

public Employee(SerializationInfo info, StreamingContext ctxt)
{
    //Get the values from info and assign them to the appropriate properties
    EmpId = (int)info.GetValue("EmployeeId", typeof(int));
    EmpName = (String)info.GetValue("EmployeeName", typeof(string));
}

public void GetObjectData(SerializationInfo info, StreamingContext ctxt)
{
    //You can use any custom name for your name-value pair. But make sure you
    // read the values with the same name. For ex:- If you write EmpId as "EmployeeId"
    // then you should read the same with "EmployeeId"
    info.AddValue("EmployeeId", EmpId);
    info.AddValue("EmployeeName", EmpName);
}

上面的例子展示了如何反序列化和序列化。如您所见，反序列化需要 GetObjectData。如果将其留空，您的对象将没有所需的值。