一个C#写的简单上传与下载程序，下载时候输入地址，选择合适的保存路径就行了，不过我感觉，下载或上传的地址需要开通匿名才行吧。-A C# to write a simple upload and download program, download time, enter an address, select the appropriate save path on the line, but I feel need to open an anonymous address to download