///  <summary>

        /// 获取指定驱动器的空间总大小(单位为B)

        ///  </summary>

        ///  <param name="str_HardDiskName">只需输入代表驱动器的字母即可 </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>

        /// 获取指定驱动器的剩余空间总大小(单位为B)

        ///  </summary>

        ///  <param name="str_HardDiskName">只需输入代表驱动器的字母即可 </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;

        }