使自定义.NET异常可序列化的正确方法是什么？

using System.Runtime.Serialization;

public class CustomException : Exception, ISerializable
{
    private string message;

    public CustomException(string message) : base(message)
    {
        this.message = message;
    }

    public CustomException(string message, Exception innerException) : base(message, innerException)
    {
        this.message = message;
    }

    protected CustomException(SerializationInfo info, StreamingContext context) : base(info, context)
    {
        message = info.GetString("Message");
    }

    public string Message
    {
        get { return message; }
        set { message = value; }
    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        if (info == null) throw new ArgumentNullException("info");
        info.AddValue("Message", message);
        base.GetObjectData(info, context);
    }
}