C#写的winfrom的简单的文件分割和合并小程序，（后来又加入了压缩解压功能，但是压缩解压功能有一些问题，无法正常使用。）-C# write winfrom simple file segmentation and merging of small procedures, (and later joined the compression decompression, but compression decompression function has some problems, can t