Introduction - If you have any usage issues, please Google them yourself
1. Support multi-threaded: multiple threads of a moment to download a file with different block .2. HTTP: If you downloaded a file certain block (half), then the next download when the download is not just completed in block block file download status with control documented. block the download is complete the order in which they are not necessarily consecutive .3, pay attention: the default download directory is D: emp, confirm that the directory has write permission to Everyone, the default test download document One source for Asp.net