c#中常会涉及到一些类，List的深度拷贝。

public object Clone(object ldc)
        {
            BinaryFormatter
Formatter = new BinaryFormatter();
            MemoryStream stream = new
MemoryStream();
            Formatter.Serialize(stream, ldc);

stream.Position = 0;
            object clonedObj =
Formatter.Deserialize(stream);
            stream.Close();

return clonedObj;
        }