两种取得硬盘剩余空间方法

[DllImport("kernel32.dll")]

private static extern bool GetDiskFreeSpaceEx(

string lpDirectoryName, out ulong lpFreeBytesAvailable, out ulong lpTotalNumberOfBytes, out ulong lpTotalNumberOfFreeBytes);

/// <summary>

/// 取得磁盘剩余空间

/// </summary>

/// <param name="driveDirectoryName">驱动器名</param>

/// <returns>剩余空间</returns>

private static ulong GetFreeSpace(string driveDirectoryName)

{

ulong freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes;

if (!driveDirectoryName.EndsWith(":\\"))

{

driveDirectoryName += ":\\";

}

GetDiskFreeSpaceEx(driveDirectoryName, out freeBytesAvailable, out totalNumberOfBytes, out totalNumberOfFreeBytes);

return freeBytesAvailable;

}

/// <summary>

/// 取得磁盘剩余空间

/// </summary>

/// <param name="driveDirectoryName">驱动器名</param>

/// <returns>剩余空间</returns>

private static ulong GetFreeSpace(string driveDirectoryName)

{

ulong freefreeBytesAvailable = 0;

DriveInfo drive = new DriveInfo(driveDirectoryName);

freefreeBytesAvailable = (ulong)drive.AvailableFreeSpace;

return freefreeBytesAvailable;

}