摘要：usingSystem;usingSystem.Collections.Generic;usingSystem.Text;usingSystem.Runtime.Serialization.Formatters.Binary;usingSystem.IO;namespaceSys{[Serializable]//指示一个类可以序列化publicclassElement{//复制对象publicob... 阅读全文

摘要：usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Data.SqlClient;usingSystem.Drawing;usingSystem.Text;usingSystem.Windows.Forms;namespaceSys{publicpar... 阅读全文