Securely deleting a file in C#.NET

Question

In a project I am doing I want to give users the option of \'securely\' deleting a file - as in, overwriting it with random bits or 0\'s. Is there an easy-ish way of doing this

Answer 1

I'd first try simply to open the file and overwrite its contents as I would normally do it. Pretty trivial in C#, I won't even bother to write it. However I don't know how secure that would be. For one thing, I'm quite certain it would not work on flash drives and SSD's that use sophisticated algorithms to provide wear leveling. I don't know what would work there, perhaps it would need to be done on driver level, perhaps it would be impossible at all. On normal drives I just don't know what Windows would do. Perhaps it would retain old data as well.