用C#的两种取得硬盘剩余空间方法

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用C#的两种取得硬盘剩余空间方法

1.[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;
    }

using System.Management;

private void ListDiskQuota()
{
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_LogicalDisk");

Console.WriteLine( "Disk Volume" + "/t" + "FreeSpace" );
foreach( ManagementObject disk in searcher.Get() )
{
Console.WriteLine( disk["Caption"] + "/t" + disk["FreeSpace"] );
}
}