本章講述：根據磁碟碟符獲取磁碟總的儲存容量和可用儲存容量；

/// 獲取指定驅動器的空間總大小(單位為B)
/// </summary>
/// <param name="str_HardDiskName">只需輸入代表驅動器的字母即可 </param>
/// <returns> </returns>
public static long GetHardDiskSpace(string str_HardDiskName)
{
	long totalSize = new long();
	str_HardDiskName = str_HardDiskName + ":\\";
	System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();
	foreach (System.IO.DriveInfo drive in drives)
	{
		if (drive.Name == str_HardDiskName)
		{
			totalSize = drive.TotalSize;
		}
	}
	return totalSize;
}

/// <summary>
/// 獲取指定驅動器的剩餘空間總大小(單位為B)
/// </summary>
/// <param name="str_HardDiskName">只需輸入代表驅動器的字母即可 </param>
/// <returns> </returns>
public static long GetHardDiskFreeSpace(string str_HardDiskName)
{
	long freeSpace = new long();
	str_HardDiskName = str_HardDiskName + ":\\";
	System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();
	foreach (System.IO.DriveInfo drive in drives)
	{
		if (drive.Name == str_HardDiskName)
		{
			freeSpace = drive.TotalFreeSpace;
		}
	}
	return freeSpace;
}