获得驱动器使用空间的百分比

Question

我发现了以下这篇文章，它给了我想要的（how to find the free percentage of a drive in c#）的反函数，但我无法完全理解如何将驱动器的USED空间作为百分比返回。

Answer 1

它几乎是一样一样

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;