调用OpenNETCF.Desktop.Communication.dll从PDA上上载和下传数据-The call OpenNETCF.Desktop.Communication.dll upload and downlink data from the PDA

调用OpenNETCF.Desktop.Communication.dll实现PC与PDA通信之间的指定文件下传，以及遍历文件上载-The communication between the PC and the PDA call OpenNETCF.Desktop.Communication.dll achieve the specified file transfer, and traverse the file upload