MDI Parent and Child

Creating MDI parent and child

MDIParent窗体中集成C#基础编程，文件操作，窗体，XML，数据库，多线程串口通信等功能。此源码拥有丰富注释，方便初学者入门。-The MDIParent form the basis of integrated C# programming, file operations, forms, XML, database, multi-threaded serial communication and other functions. This source has extensive no