将驱动器使用空间作为百分比

Question

我发现以下帖子给出了我想要的反转（how to find the free percentage of a drive in c#），但我不能完全理解如何以百分比的形式返回驱动器的USED空间

Answer 1

它与链接的答案几乎相同，如

DriveInfo drive = new DriveInfo("C");
double percentFree = 100 * (double)(drive.TotalSize - drive.AvailableFreeSpace) / drive.TotalSize;

Answer 2

DriveInfo drive = new DriveInfo("C");
var totalUsed = drive.TotalSize-drive.TotalFreeSpace;
var percentUsed = 100 * (double)totalUsed / drive.TotalSize;